CN107889828B - Pesticide composition for preventing and treating cotton bollworms in cotton fields and application - Google Patents
Pesticide composition for preventing and treating cotton bollworms in cotton fields and application Download PDFInfo
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
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Abstract
The invention discloses a pesticide composition for preventing and controlling cotton bollworms in cotton fields and application thereof. After the glyphosate and the organic silicon assistant are compounded, the quick action, the prevention effect and the lasting period of the glyphosate for preventing and killing cotton bollworm host plant abutilon are accelerated, wherein after 300, 400 and 500 times of liquid and 1000 times of the organic silicon assistant are compounded for use, the prevention effect reaches over 85 percent in 5 days after the application, and the prevention effect reaches 100 percent in 28 days after the application and is far higher than the single-dose prevention effect of the glyphosate; after the emamectin benzoate and the organic silicon assistant are compounded, the quick action, the control effect and the lasting period of cotton bollworm control are improved, the drug resistance of pests is delayed, and the control effect is improved by 20 percent after 48 hours of traditional Chinese medicine; the ternary complex composition of the glyphosate, the emamectin benzoate and the organic silicon assistant has the double effects of preventing and killing cotton bollworm host plant piemarker in the cotton field in time while preventing and killing the cotton bollworm, reduces the dosage, and has the effect of preventing and killing cotton bollworm by spraying once, thereby reducing the labor cost.
Description
Technical Field
The invention relates to a pesticide composition for preventing and controlling cotton bollworms in cotton fields and application thereof, belonging to the technical field of agriculture.
Background
Cotton (Gossypium hirsutum L.) has a perennial planting area of 533 ten thousand hm2About 15 percent of the planting area of the world is occupied, and the fertilizer is an important economic crop and textile industrial raw material in China. However, cotton is also a crop with more kinds of pests and more serious pestsFirst, the cotton yield reduction is 15% -20% throughout the year. The cotton bollworm (Helicoverpaarmigera) is the main pest of cotton, and since the 90 s in the 20 th century, the cotton bollworm is generated in China in successive years, and the annual economic loss is as high as hundreds of billions of yuan. In recent years, along with the popularization and application of Bt cotton, the population quantity of cotton bollworms can be effectively controlled, and remarkable economic and social benefits are brought. However, the large-area planting of Bt cotton has an influence on the ecological system of the cotton field, and the main expression is as follows: (1) some piercing-sucking pests in cotton fields rise as main pests; (2) the expression level of Bt toxin in the later period of the transgenic cotton is reduced, and the insecticidal effect on cotton bollworms is weakened; (3) the constant selective pressure exerted by transgenic cotton on bollworms also causes the pests to slowly develop resistance to it. Resistance monitoring data over the last 10 years has shown that field populations of corn earworm develop resistance in the united states, while several lines with high levels of resistance to Cry1A toxin have been acquired through years of indoor resistance screening in china, australia, india. Therefore, in the current form, how to effectively develop the control of cotton field pests to ensure high yield and high quality of cotton is an important subject, and from the existing situation, the novel chemical pesticide is reasonably popularized and used, and meanwhile, the control strategy is more effective when the novel chemical pesticide is matched with transgenic Bt cotton.
Abutilon theophrasti medicinal is an annual herbaceous plant of Malvaceae, widely distributed all over the country, often growing in farmlands, wastelands or roadside, and is a main weed of cotton, corn and bean farmlands, and is also a main trap plant of cotton bollworms. Piemarker has the characteristics of large seed setting amount and high seed activity, is easy to form a durable soil seed bank, is difficult to completely remove once the seed bank is formed, and can obviously reduce the yield of most crops when piemarker weeds reach a certain density, so that the piemarker needs to be removed. The use of chemical herbicides greatly reduces the harm of weeds to crops. However, due to excessive dependence on herbicides with similar action mechanisms after long-term repeated use, the biotypes of resistant weeds continuously appear, the control effect of chemical herbicides is reduced, and the difficulty of weed control is increased. By 2014, atrazine-resistant abutilon populations have been discovered in corn and soybean fields in serbian, usa and new zealand.
Glyphosate (Glyphosate) was a broad-spectrum herbicide developed by Monsanto in 1971 to have epoch-making significance in world agriculture. The compound is a post-emergence herbicide which is high-efficiency, low-toxicity, broad-spectrum and systemic conduction and is not selectively sprayed on leaf surfaces, and mainly inhibits the conversion of shikimin to phenylalanine, tyrosine and tryptophan by inhibiting enol pyruvyl shikimate phosphate synthase in plants, so that the synthesis of protein is interfered to cause plant death. At present, glyphosate becomes the pesticide variety with the widest application and the largest use amount in the world, and the annual sale value of glyphosate always ranks first in pesticides. However, glyphosate is found to exert its efficacy slowly and slightly under low temperature or poor light conditions during use, and weeds generally show the symptoms of injury within 4-7 days: the plants lose green and yellow, and the whole plants are withered and dead after 15-20 days.
The emamectin benzoate (emamectin benzoate for short) is a novel efficient antibiotic insecticide and acaricide which is derived and optimally synthesized by taking a fermentation product, namely, the avermectin B1 of soil microorganism, namely, streptomyces avermitilis as a parent compound. The action mechanism of the insecticidal composition enables the pests to be quickly paralyzed, antifeedant, slow or immobile within hours and die within 24-48 hours by inhibiting the transmission of aminobutyric acid in the motor nerves of the pests. The action mode is mainly contact poisoning action by stomach toxicity, is safe to beneficial insects, natural enemies, people and livestock in a conventional dosage range, and can be mixed with most of pesticides. However, pakistan reported in 2004 to 2008 that local prodenia litura field populations have developed 16-77 times resistance to emamectin benzoate; the 2010 monitoring finds that the resistance level of asparagus caterpillar population with Yunnan Jinning, Shanghai Fengxian and Jiangsu Liuhe to emamectin benzoate reaches 45-437 times; in 2011, Shantou appeared a high-resistance population of the caraway of the diamondback moth. At present, the resistance of cotton bollworms to emamectin benzoate in northern cotton areas is also continuously rising.
Disclosure of Invention
The invention provides a pesticide composition for preventing and treating cotton bollworm in cotton field and application thereof, aiming at overcoming the problems of poor quick-acting property, poor control effect and poor lasting period of single dosage of glyphosate and emamectin benzoate. The invention improves the quick-acting property, the control effect and the lasting period of the glyphosate and the emamectin benzoate single-agent by respectively compounding with the organic silicon assistant. After the glyphosate, the emamectin benzoate and the organic silicon assistant are compounded in a ternary way, the host plant piemarker of the cotton bollworm can be thoroughly removed while the cotton bollworm is prevented and controlled, the dosage is reduced, and the effect of preventing two crops by spraying is achieved, so that the labor cost is reduced.
The technical scheme of the invention is as follows: the pesticide composition for preventing and treating cotton bollworms in cotton fields comprises effective components and an auxiliary agent, wherein the effective components comprise emamectin benzoate and an organic silicon auxiliary agent in a mass ratio of 1: 80-150, preferably 1: 100.
further, the effective components are glyphosate, emamectin benzoate and an organic silicon assistant, and the mass ratio of the glyphosate to the emamectin benzoate to the organic silicon assistant is 60-150: 1: 80-150, preferably: 60-150: 1: 100, more preferably 80 to 140: 1: 100.
the preferred silicone adjuvant is excellent benefit.
The auxiliary agents comprise solvents, emulsifying agents, wetting agents, disintegrating agents, stabilizing agents, dispersing agents, thickening agents, penetration enhancers, pH regulators, antifoaming agents, antifreezing agents, carriers and other known substances which are beneficial to stabilizing and exerting the drug effect of the effective components in the preparation, and the known substances are all various components which are commonly used or allowed to be used in the pesticide preparation, and the specific components and the dosage are determined through experiments according to the formula requirements.
The pesticide composition can be directly purchased from single agents of glyphosate, emamectin benzoate and an organic silicon assistant preparation (such AS 41% glyphosate isopropylamine salt AS and 1% emamectin benzoate EC) sold in the market when in use, and the single agents are respectively diluted and then mixed together according to the proportion for spraying, or the glyphosate, the emamectin benzoate and the organic silicon assistant pesticide raw materials are added with the assistant to be prepared into pesticide preparations (such AS aqua, emulsion in water and the like) and then stored, and the pesticide preparations are directly mixed with water for spraying when in use.
The invention also aims to provide the application of the pesticide composition containing the emamectin benzoate and the organic silicon assistant in preventing and controlling the cotton bollworms, and provides the application of the pesticide composition containing the glyphosate, the emamectin benzoate and the organic silicon assistant in preventing and controlling the cotton bollworms and preventing and controlling the abutilon of host plants.
The application method for preventing and controlling cotton bollworms in the cotton field comprises the following steps:
the method comprises the following steps: control before cotton planting
Before cotton planting, firstly spraying a field with piemarker in the field to eliminate host plants, spraying the piemarker by adopting a pesticide composition containing glyphosate, emamectin benzoate and an organic silicon auxiliary agent and a stem and leaf spraying method until the spraying period is uniform;
the method can simultaneously prevent and kill cotton bollworms on abutilon and abutilon, prevent and kill the cotton bollworms spread by the abutilon from the root, and achieve the effects of multiple prevention by spraying, cost saving and synergy.
After the prevention and control before cotton planting, the piemarker can be thoroughly eliminated, and the number of cotton bollworms is reduced. If the cotton bollworms are still more in the generation period of 2-3 generations, the pesticide composition containing emamectin benzoate and the organic silicon assistant can be adopted to spray stems and leaves of cotton plants for 1-2 times to eliminate the cotton bollworms.
The method 2 comprises the following steps: prevention and control of 2-3 generation cotton bollworm in emergence period
In the emergence period of cotton bollworm of 2-3 generations, also in the peak period of emergence of weeds of cotton field piemarker and the like, adopting a pesticide composition containing glyphosate, emamectin benzoate and organosilicon adjuvant, and spraying piemarker by using stem and leaf spraying method to prevent and kill the piemarker; meanwhile, the pesticide composition containing emamectin benzoate and the organic silicon assistant is adopted to spray stems and leaves of cotton plants to prevent and control cotton bollworms, and the cotton bollworms can be sprayed for 1 time if more cotton bollworms are still available in the later period.
Preferably, when the piemarker is sprayed, if the age of the piemarker is small (2-5 leaf stage), 41 percent of glyphosate AS 400-; if the age of abutilon grass is larger (6-7 leaf stage), a solution with 41% glyphosate AS 300 times, 1% emamectin benzoate EC1000 times and organosilicon adjuvant 1000 times is recommended.
Preferably, spraying is carried out on cotton plants, and after 1000 times of 1% emamectin benzoate EC is compounded with 1000 times of organic silicon assistant liquid, spraying is carried out on stems and leaves of the cotton plants.
Furthermore, if the cotton planted in the field is the transgenic glyphosate-resistant cotton, 41% glyphosate AS 300-fold liquid with 500 times, 1% emamectin benzoate EC 1000-fold liquid and organosilicon auxiliary agent 1000-fold liquid can be adopted, and after ternary compounding, the stem and leaf spraying method is carried out on the cotton plants and the abutilon, the water consumption is 300-450 liters per hectare, and the spraying is uniform. It can simultaneously prevent and kill cotton bollworm in piemarker and cotton and piemarker, and can completely prevent and kill cotton bollworm.
Abutilon is a main weed in cotton fields, and when the density of the Abutilon reaches 5-8 strains/m row length, the growth period of cotton is delayed due to weed competition, the cotton boll weight, the number of single-boll seeds and the seed dressing are reduced, so the Abutilon in the cotton fields needs to be eliminated. The piemarker is the main trapping plant of bollworm, if the piemarker is the host plant for preventing and killing bollworm, the bollworm can still be further selected and transferred to cotton plant to be damaged after the piemarker dies. The invention has the double effects of preventing and killing cotton field piemarker and cotton bollworm after the glyphosate, the emamectin benzoate and the organic silicon assistant are compounded in a ternary way.
The invention discovers that: (1) after the glyphosate and the organic silicon assistant are compounded, the quick action, the prevention effect and the lasting period of the abutilon hemp control by the glyphosate are accelerated, wherein after 300, 400 and 500 times of liquid and 1000 times of the organic silicon assistant are compounded for use, the prevention effect reaches over 85 percent after 5 days of application, and the prevention effect reaches 100 percent after 28 days of application and is far higher than the single-dose prevention effect of the conventional dosage (200 times) of the glyphosate; (2) after the emamectin benzoate and the organic silicon assistant are compounded, the quick action, the prevention effect and the lasting period of cotton bollworm prevention and control are improved, the drug resistance of pests is delayed, and the prevention effect is improved by 20 percent after 48 hours of traditional Chinese medicine; (3) the preventing and killing effect of the ternary complex composition of the glyphosate, the emamectin benzoate and the organic silicon assistant on the abutilon and the cotton bollworm is respectively equivalent to the complex effect level of the glyphosate, the organic silicon assistant, the emamectin benzoate and the organic silicon assistant; the ternary complex composition has double effects of preventing and killing cotton field piemarker and cotton bollworm, reduces the dosage and simultaneously has the effect of preventing and killing cotton bollworm by spraying once, thereby reducing the labor cost.
Detailed Description
Test example 1: screening of Glyphosate plus organosilicon adjuvant
Test agent 1
41% glyphosate isopropylamine salt (nongda) AS (aqua), produced by Mengshan International (stock control) corporation;
organosilicon adjuvant-Everest.
TABLE 1 test treatment
| Numbering | Drug treatment | Dilution factor |
| 1 | 41% Glyphosate AS | 300 |
| 2 | 41% Glyphosate AS | 200 (conventional quantity) |
| 3 | 41% Glyphosate + adjuvant | 300+3000 |
| 4 | 41% Glyphosate + adjuvant | 300+2000 |
| 5 | 41% Glyphosate + adjuvant | 300+1000 |
| 6 | 41% Glyphosate + adjuvant | 200+3000 |
| 7 | 41% Glyphosate + adjuvant | 200+2000 |
| 8 | 41% Glyphosate + adjuvant | 200+1000 |
| 9 | Auxiliary agent | 3000 |
| 10 | Auxiliary agent | 2000 |
| 11 | Auxiliary agent | 1000 |
| 12 | Blank control | -- |
2 conditions of the test
The test is carried out on a test farm of cotton institute of agricultural sciences institute of Anyang China in Henan, 4.25.2017, piemarker seeds are sown in a weed nursery, planting is carried out after the piemarker seedlings emerge, the row spacing and the plant spacing are ensured to be 0.2m multiplied by 0.15m, and conventional management is carried out after the piemarker seedlings emerge.
3 test treatment
The test was carried out by spraying in the 3-5 leaf stage of Abutilon, and 12 treatments were set (see Table 1), with 3 replicates per treatment set, and arranged in random blocks. The pesticide application device is a knapsack manual sprayer of Singaporean, and a fan-shaped spray head, the spraying amount is 300-450 liters per hectare of liquid medicine, and the spraying is uniform.
4 survey content
Investigation of piemarker: the field planting of the piemarker is about 30 in each cell, the investigation is required to record the number of the piemarker in the sample, and the stem and leaf spraying treatment is carried out on each cell on the same investigation day. After the application of the pesticide, the death and survival number of piemarker in each cell are investigated in 5, 14, 21 and 28 days after the application of the pesticide, the fresh weight of the upper part of the piemarker in a sample point is weighed while the prevention effect of the plant is investigated in 28 days after the pesticide application, and the fresh weight prevention effect is calculated. 5 results
Table 241% glyphosate AS and organosilicon adjuvant compounded has effect of preventing abutilon
Test results show that when 41 percent glyphosate AS is used according to 200 times of liquid (conventional dosage), the control effect is only 32.5 percent after 5 days of pesticide application, the control effect is increased to 87.5 percent after 14 days of pesticide application, the control effect is the highest and is 92.5 percent after 21 days of pesticide application, and then partial withered plants can grow tender buds from the base part, so the control effect of the plants 28 days after pesticide application is reduced; when 300 times of the solution is used, the control effect is relatively low after 5 to 28 days, and the abutilon cannot be effectively controlled.
The 41% glyphosate AS is respectively compounded with 1000 times of organosilicon adjuvant, 2000 times of organosilicon adjuvant and 3000 times of organosilicon adjuvant according to 200 times of solution and 300 times of solution, wherein the 41% glyphosate AS is respectively compounded with 1000 times of organosilicon adjuvant according to 200 times of solution and 300 times of solution to achieve optimal using effect, the quick-acting property and the lasting period of the single dosage of glyphosate can be obviously improved, the control effect is AS high AS 97.5% in 5 days after the application, and the control effect is still AS high AS more than 92.5% in 28 days after the application.
Test example 2:
test agent 1
41% glyphosate isopropylamine salt (nongda) AS (aqua), produced by Mengshan International (stock control) corporation;
1% of emamectin benzoate (abbreviated as emamectin benzoate) EC (emulsifiable concentrate), produced by Jiangsu Kesheng group Limited company;
organosilicon adjuvant-Everest.
2 conditions of the test
The test is carried out on a test farm of cotton institute of agricultural sciences institute of Anyang China in Henan, 4.25.2017, piemarker seeds are sown in a weed nursery, planting is carried out after the piemarker seedlings emerge, the row spacing and the plant spacing are ensured to be 0.2m multiplied by 0.15m, and conventional management is carried out after the piemarker seedlings emerge.
3 test treatment
The experiment is provided with 3 application periods, spraying is respectively carried out at the 2-3 leaf period, the 4-5 leaf period and the 6-7 leaf period of the piemarker, 16 treatments are arranged at each application period (see table 3), each treatment is provided with 3 times of repetition, and random block arrangement is carried out. The pesticide application device is a knapsack manual sprayer of Singaporean, and a fan-shaped spray head, the spraying amount is 300-450 liters per hectare of liquid medicine, and the spraying is uniform.
The cotton bollworm adopted in the test is from the test worm raised in the insect raising room of the plant protection research institute of cotton institute of Chinese academy of agricultural sciences, more than nine generations of indoor artificial feed are continuously raised, the newly hatched larva is raised to 2-instar larva by using fresh cotton leaves, and the larva with uniform size is selected for the test. Collecting leaf blade without contacting with any medicament and spreading on top of Abutilon, inoculating 2-year larva to each leaf, soaking leaf with Abutilon into different treatment solutions for 5 s, taking out, air drying, placing into plastic insect box (upper and lower aperture diameter is 6cm, 4.5cm, height is 7cm respectively), culturing in humid condition, repeating for 3 times, and using tap water without any medicament as blank control. After treatment, placing the insect breeding box after inoculation at the temperature of (26 +/-1) DEG C, RH 60 +/-10 percent and the light-dark ratio of 16 h: culturing in a constant-temperature illumination incubator for 8 h.
TABLE 3 drug treatment protocol
4 survey content
Investigation of piemarker: the field planting of the piemarker is about 30 in each cell, the investigation is required to record the number of the piemarker in the sample, and the stem and leaf spraying treatment is carried out on each cell on the same investigation day. After the application of the pesticide, the death and survival number of piemarker in each cell are investigated in 5, 14, 21 and 28 days after the application of the pesticide, the fresh weight of the upper part of the piemarker in a sample point is weighed while the prevention effect of the plant is investigated in 28 days after the pesticide application, and the fresh weight prevention effect is calculated.
Cotton bollworm investigation: after 48h of treatment, the death was checked. The death judgment standard is as follows: if the body of the insect is touched with the brush pen, the insect is dead after the test insect can not crawl normally.
5 small knot
TABLE 4 preventive effect of ternary mixture composition against piemarker in 2-3 leaf stage
TABLE 5 preventive effect of ternary mixture composition against piemarker at 4-5 leaf stage
TABLE 6 preventive effect of ternary mixture composition against piemarker in 6-7 leaf period
TABLE 7 preventive effect of ternary blend compositions on Heliothis armigera
AS can be seen from tables 4, 5 and 6, the fact that 41% glyphosate AS is sprayed with piemarker of different growth periods according to 300 times and 200 times (conventional dosage) shows that the application according to the conventional dosage of 200 times has better prevention effect on the piemarker of 2-3 leaf periods, and the prevention effect reaches 95.0% after 21 days, but the quick action is poor; the control effect on the 4-5 leaf stage and the 6-7 leaf stage is gradually reduced along with the increase of the growth period. When the composition is used according to 300 times, the effect of preventing abutilon at the 2-3 leaf stage, the 4-5 leaf stage and the 6-7 leaf stage is poor. In addition, the later period shows that partial withered plants can grow tender shoots from the base parts, so that the plant control effect is obviously reduced by 28 days after the pesticide is applied.
However, after the glyphosate and the organosilicon are compounded, the weeding effect of the glyphosate can be obviously improved and the quick action is obviously improved under the condition of reducing the dosage of the glyphosate after the glyphosate and the organosilicon adjuvant are compounded and used according to 300, 400, 500 and 600 times of low dosage and 1000 times of low dosage, the weed suffering symptoms are 2 to 3 days earlier than the weed without the organosilicon adjuvant, for example, in the 2 to 3 and 4 to 5 leaf stages of piemarker, the control effect of the 4 kinds of compound compositions is over 80.0 percent in 5 days after the application, while the control effect of the conventional dosage of 200 times of application only reaches 31.7 percent and 58.9 percent respectively. Meanwhile, after the glyphosate and the organic silicon are compounded, the lasting period of the composition is prolonged, the control effect is still more than 97.0 percent (except for the composition of 600 times of the glyphosate and 1000 times of the auxiliary agent) after 28 days of the composition, new tender buds growing from the dead plant base are not found, and the abutilon is thoroughly eliminated. The 4 compound compositions have the best use effect of 300+1000, 400+1000 and 500+1000, especially 300+1000 and 400+1000, and the control effect on 3 piemarker in different growth periods is obviously better than that of the single glyphosate 200 times liquid.
As can be seen from Table 7, 1% of emamectin benzoate EC is used according to 1000 times of liquid, the control effect on cotton bollworms reaches 73.2% 48h after the application, and after the emamectin benzoate EC is compounded with an auxiliary agent, the control effect on the cotton bollworms is obviously improved, and the control effect reaches 93.3% 48h after the application.
As can be seen from tables 4 to 7, the preventing and killing effects of the ternary complex composition of the glyphosate, the emamectin benzoate and the organic silicon assistant on the abutilon and the cotton bollworm are respectively equivalent to the level of the preventing and killing effects of the complex composition of the glyphosate, the organic silicon assistant, the emamectin benzoate and the organic silicon assistant. Therefore, the ternary complex composition of the glyphosate, the emamectin benzoate and the organic silicon assistant can obviously and effectively remove the piemarker of the host plant of the cotton bollworm while preventing and controlling the cotton bollworm, and has the effect of preventing two pests by spraying at the same time of reducing the dosage.
In summary, the recommended control methods are as follows:
the method comprises the following steps: control before cotton planting
Before cotton planting, spraying an area with piemarker on the field head to eliminate host plants, and recommending 41% of glyphosate AS 400-; if the age of abutilon hemp is larger (6-7 leaf period), a solution with 41 percent of glyphosate AS 300 times, 1 percent of emamectin benzoate EC1000 times and an organic silicon assistant 1000 times is recommended, a stem leaf spraying method is adopted after ternary compounding, the water consumption is 300-450 liters per hectare, and the spraying is uniform in one week.
After the cotton is prevented and treated before planting, the piemarker can be completely eliminated, and the incidence rate of cotton bollworms is reduced. If the cotton bollworm is still more in the generation period of 2-3 generations of cotton bollworms, the method recommends that after 1000 times of 1 percent of emamectin benzoate EC is compounded with 1000 times of organic silicon assistant liquid, the stem and leaf of the cotton plant are sprayed for 1 time to control the cotton bollworm.
The method 2 comprises the following steps: prevention and control of 2-3 generation cotton bollworm in emergence period
The emergence period of the 2-3 generations of cotton bollworms is also the peak period of emergence of weeds such AS cotton field piemarker and the like, if the age of the piemarker is smaller (2-5 leaf period), 500 times of 41 percent of glyphosate AS 400-; if the age of the abutilon hemp is larger (6-7 leaf period), 41% glyphosate AS 300 times, 1% emamectin benzoate EC1000 times and an organic silicon assistant 1000 times liquid are recommended, after ternary combination, the abutilon hemp stems and leaves are sprayed by adopting a stem and leaf spraying method, the water consumption is 300-450 liters per hectare, and simultaneously, after 1% emamectin benzoate EC1000 times and the organic silicon assistant 1000 times liquid are recommended, the cotton plants are sprayed by the stems and leaves, and the cotton bollworms are prevented and treated.
If the cotton planted in the field is the transgenic glyphosate-resistant cotton, 500 times of 41% glyphosate AS 300-.
Claims (6)
1. The pesticide composition for preventing and treating cotton bollworms in cotton fields is characterized by comprising the effective components of glyphosate, emamectin benzoate and an organic silicon assistant in a mass ratio of 60-150: 1: 80-150 parts by weight; the organic silicon auxiliary agent is excellent in efficiency.
2. The pesticide composition for controlling cotton bollworms in cotton fields as claimed in claim 1, wherein the mass ratio of the glyphosate to the emamectin benzoate to the organosilicon adjuvant is 80-140: 1: 100.
3. the use of the pesticidal composition of claim 1 or 2 for simultaneously controlling abutilon and bollworm in cotton fields.
4. A method for preventing and controlling cotton bollworm in cotton field, wherein before the cotton is planted, the area with Abutilon is sprayed, the pesticide composition containing glyphosate, emamectin benzoate and organosilicon adjuvant is adopted, and the Abutilon is sprayed by stem and leaf spraying method; when the piemarker is sprayed, if the age of the piemarker is 2-5 leaf stages, 41 percent of glyphosate AS 400-fold, 1 percent of emamectin benzoate EC 1000-fold and 1000-fold liquid of organosilicon auxiliary agent are used; if the age of abutilon hemp is 6-7 leaves, 41% glyphosate AS 300 times, 1% emamectin benzoate EC1000 times and organosilicon adjuvant 1000 times are used.
5. A method for preventing and killing cotton bollworm in cotton field features that in the generation of 2-3 bollworms, the agricultural chemical composition containing glyphosate, emamectin benzoate and organosilicon assistant is used to spray the piemarker by stem-leaf spray method to prevent and kill it; meanwhile, a pesticide composition containing emamectin benzoate and an organic silicon assistant is adopted to spray stems and leaves of cotton plants to prevent and control cotton bollworms; when the piemarker is sprayed, if the age of the piemarker is 2-5 leaf stages, 41 percent of glyphosate AS 400-fold, 1 percent of emamectin benzoate EC 1000-fold and 1000-fold liquid of organosilicon auxiliary agent are used; if the age of abutilon hemp is 6-7 leaves, using a solution of 41% glyphosate AS 300 times, 1% emamectin benzoate EC1000 times and organosilicon adjuvant 1000 times; spraying cotton plants with 1000 times of 1% emamectin benzoate EC and 1000 times of organosilicon adjuvant.
6. A method for preventing and controlling cotton bollworm in cotton field features that the cotton planted in field is transgenic glyphosate-resistant cotton, which is prepared from 41% glyphosate AS 300-times, 1% emamectin benzoate EC 1000-times and organosilicon assistant 1000-times through ternary compounding and spraying the stem and leaf of cotton plant and cotton bollworm.
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| 5%甲氨基阿维菌素苯甲酸盐乳油防治烟田烟青虫药液最佳使用方案研究;冯超;《植物保护》;20121208;第38卷(第6期);第170-173页 * |
| 冯超.5%甲氨基阿维菌素苯甲酸盐乳油防治烟田烟青虫药液最佳使用方案研究.《植物保护》.2012,第38卷(第6期),第170-173页. * |
| 野生苘麻对棉铃虫的诱集作用及其技术探讨;杨晓红 等;《中国棉花》;20070615(第6期);第31页 * |
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