CN111205541A - Long-acting insect-expelling agricultural mulching film and preparation method thereof - Google Patents
Long-acting insect-expelling agricultural mulching film and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 244000028419 Styrax benzoin Species 0.000 claims abstract description 15
- 235000000126 Styrax benzoin Nutrition 0.000 claims abstract description 15
- 235000008411 Sumatra benzointree Nutrition 0.000 claims abstract description 15
- 229960002130 benzoin Drugs 0.000 claims abstract description 15
- 235000019382 gum benzoic Nutrition 0.000 claims abstract description 15
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims abstract description 14
- 240000005636 Dryobalanops aromatica Species 0.000 claims abstract description 14
- 239000000052 vinegar Substances 0.000 claims abstract description 14
- 235000021419 vinegar Nutrition 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 13
- 239000011425 bamboo Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000292 calcium oxide Substances 0.000 claims abstract description 10
- 244000080767 Areca catechu Species 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000002386 leaching Methods 0.000 claims abstract description 5
- 244000082204 Phyllostachys viridis Species 0.000 claims abstract 3
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 7
- 238000004821 distillation Methods 0.000 claims description 6
- 235000006226 Areca catechu Nutrition 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000002137 ultrasound extraction Methods 0.000 claims description 2
- 238000000071 blow moulding Methods 0.000 abstract description 8
- 241000607479 Yersinia pestis Species 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract description 6
- 241000238631 Hexapoda Species 0.000 description 11
- 241001330002 Bambuseae Species 0.000 description 10
- 230000001846 repelling effect Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000077 insect repellent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 210000000582 semen Anatomy 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 241000243785 Meloidogyne javanica Species 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 241001124076 Aphididae Species 0.000 description 2
- 241000289763 Dasygaster padockina Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 241000258937 Hemiptera Species 0.000 description 2
- 241000255969 Pieris brassicae Species 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 241000244206 Nematoda Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000469 ethanolic extract Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2493/00—Characterised by the use of natural resins; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0058—Biocides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/07—Aldehydes; Ketones
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention belongs to the field of agricultural products, and discloses a long-acting insect-expelling agricultural mulching film and a preparation method thereof. The preparation method comprises the following steps: adding calcium oxide and alcohol into bamboo vinegar liquid, distilling and recovering to obtain A liquid; adding water into the crushed areca nuts and cinnamomum camphora fruits, and performing ultrasonic leaching to obtain a solution B; adding benzoin into the solution A, dissolving, filtering, slowly adding the solution B, stirring and mixing to obtain slurry; adding the slurry into polyethylene master batches, and blow-molding to prepare the long-acting insect-expelling agricultural mulching film. The agricultural mulching film prepared by the invention not only has the functions of improving the soil temperature, keeping the soil moisture and maintaining the soil structure of the common mulching film, but also can effectively avoid crop pests for a long time.
Description
Technical Field
The invention relates to the field of agricultural products, in particular to a long-acting insect-expelling agricultural mulching film and a preparation method thereof.
Background
The plastic film mulching is a mature agricultural cultivation technology, can preserve water and fertilizer, keep humidity, effectively increase and prolong the growth period of crops, ensure the improvement of the yield of the crops and relieve the problem of restricting Chinese agricultural production due to drought and water shortage. However, the currently used agricultural film plastics are multi-purpose high molecular PE and PVC polymers, the crystallinity and the Melt Index (MI) are high, the polymers are not corroded by microorganisms in soil and can not be decomposed by themselves, the biodegradation period is generally dozens of years to hundreds of years, and toxic and harmful substances such as plasticizers and the like can be dissolved out in the degradation process. In addition, the current mulching film recovery rate is low, according to statistics, the annual residual quantity of agricultural films in China is as high as 30-40 ten thousand tons, and the residual film rate is more than 40%. Therefore, the mulching technology has a great negative effect on soil environment, crops, livestock and rural landscape although being good.
On the other hand, root-knot nematodes, which are one of the most serious pathogenic agricultural pests, are widely distributed around the world. The traditional control method is to use chemical pesticides, but the use of pesticides brings about the residue of a large amount of chemicals in soil, seriously pollutes the environment and crops, and endangers the health of human beings. A large amount of plant source active medicaments for killing the root-knot nematodes are researched in the last 80 th century abroad, and the systemic plant source medicaments for killing the nematode in the early 90 th century in China are researched and reported, but at present, no medicament which can effectively prevent the root-knot nematodes, is environment-friendly and has no chemical residue exists.
Therefore, there is a need to develop an agricultural mulching film which can effectively control root-knot nematodes, has no chemical residues and is biodegradable, so as to solve the technical problems.
Disclosure of Invention
In view of the above, the invention provides a long-acting insect-repelling agricultural mulching film and a preparation method thereof.
In order to solve the technical problems, the invention provides a preparation method of a long-acting insect-repelling agricultural mulching film, which comprises the following steps:
s1, adding calcium oxide and alcohol into bamboo vinegar liquid, and then carrying out reduced pressure distillation and recovery to obtain liquid A;
s2, adding water into the crushed betel nut and cinnamomum camphora fruit, and performing ultrasonic extraction to obtain a solution B;
s3, adding the benzoin into the solution A, stirring for 4-8 h at 50-70 ℃, filtering, slowly adding the solution B into the filtrate at a rate of 1-3 ml/min, and stirring and mixing to obtain slurry;
and S4, adding the slurry prepared in the step S3 into polyethylene master batches to blow-mold the mixture to prepare the long-acting insect-expelling agricultural mulching film.
Preferably, in step S1, the ratio of the bamboo vinegar to the calcium oxide to the alcohol is 100ml, (300-320) g, (10-20) ml.
Preferably, in step S1, the temperature of the reduced pressure distillation is 80 to 100 ℃, and the temperature of the condensate for the reduced pressure distillation is-30 to-10 ℃.
Preferably, in step S2, the ratio of the betel nut fruit, the cinnamomum camphora fruit and the water is (100-120) (200-240) (g: 100 ml).
Preferably, in the step S2, the ultrasonic power is 200-280W, the leaching temperature is 80-100 ℃, and the leaching time is 12-24 h.
Preferably, in step S3, the ratio of benzoin to the solutions A and B is 1g (10-20) ml (50-60) ml.
Preferably, in step S4, the weight ratio of the slurry prepared in step S3 to the polyethylene masterbatch is 1 (10-100).
The invention also provides the long-acting insect-expelling agricultural mulching film prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
1) the invention utilizes the dissolving characteristic of benzoin, firstly dissolves the benzoin in alcohol, and then slowly adds the benzoin into water to form high molecular viscous jelly, thereby wrapping the bamboo vinegar ethanol extract, the areca nut extract and the cinnamomum camphora fruit extract. The film formed by blow molding after mixing the jelly with polyethylene master batch can release the insect repellent active substance for a long time.
2) The benzoin, the bamboo vinegar, the areca nut and the cinnamomum camphora fruit are all natural insect repellents, belong to biological pesticides, and do not bring organic pollution to crops. Due to the synergistic effect of various insect-expelling active substances, the insect-expelling spectrum is wide, and the insect-expelling effect is good.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.
Example 1
A preparation method of a long-acting insect-repelling agricultural mulching film comprises the following steps:
1. adding 100ml bamboo vinegar into 311g calcium oxide, pouring 15ml alcohol, distilling at 95 deg.C under reduced pressure, using condensate at-25 deg.C, and recovering to obtain solution A;
2. pulverizing 110g of Arecae semen and 230g of Cinnamomum camphora fruit, adding 100ml of water, ultrasonic extracting at 260W and 97 deg.C for 22h to obtain solution B;
3. adding 1g of benzoin into 14ml of the solution A, stirring for 6h at 60 ℃, filtering, slowly adding 51ml of the solution B into the filtrate at 2ml/min, and stirring and mixing to obtain slurry;
4. and (3) mixing the slurry prepared in the step (3) with the polyethylene master batch according to the weight ratio of 1:50, and blow-molding to prepare the long-acting insect-expelling agricultural mulching film.
Example 2
A preparation method of a long-acting insect-repelling agricultural mulching film comprises the following steps:
1. adding 100ml bamboo vinegar into 300g calcium oxide, pouring 10ml alcohol, distilling under reduced pressure at 80 deg.C, using condensate at-30 deg.C, and recovering to obtain solution A;
2. pulverizing 100g of Arecae semen and 200g of Cinnamomum camphora fruit, adding 100ml of water, ultrasonic extracting at 200W and 80 deg.C for 12 hr to obtain solution B;
3. adding 1g of benzoin into 10ml of the solution A, stirring at 50 ℃ for 4h, filtering, slowly adding 50ml of the solution B into the filtrate at 1ml/min, and stirring and mixing to obtain slurry;
4. and (3) mixing the slurry prepared in the step (3) with the polyethylene master batch according to the weight ratio of 1:10, and blow-molding to prepare the long-acting insect-expelling agricultural mulching film.
Example 3
A preparation method of a long-acting insect-repelling agricultural mulching film comprises the following steps:
1. adding 100ml bamboo vinegar into 320g calcium oxide, pouring 20ml alcohol, distilling under reduced pressure at 100 deg.C, using condensate at-10 deg.C, and recovering to obtain solution A;
2. pulverizing 120g of Arecae semen and 240g of Cinnamomum camphora fruit, adding 100ml of water, ultrasonic extracting at 280W and 100 deg.C for 24 hr to obtain solution B;
3. adding 1g of benzoin into 20ml of the solution A, stirring at 70 ℃ for 8h, filtering, slowly adding 60ml of the solution B into the filtrate at 3ml/min, and stirring and mixing to obtain slurry;
4. and (3) mixing the slurry prepared in the step (3) with the polyethylene master batch according to the weight ratio of 1:100, and blow-molding to prepare the long-acting insect-expelling agricultural mulching film.
COMPARATIVE EXAMPLE 1 (bamboo-free Vinegar)
A preparation method of an insect-repelling agricultural mulching film comprises the following steps:
1. pulverizing 110g of Arecae semen and 230g of Cinnamomum camphora fruit, adding 100ml of water, ultrasonic extracting at 260W and 97 deg.C for 22h to obtain solution B;
2. adding 1g benzoin into 14ml alcohol, stirring at 60 deg.C for 6h, filtering, slowly adding 51mlB solution into the filtrate at 2ml/min, stirring and mixing to obtain slurry;
3. and (3) mixing the slurry prepared in the step (2) with the polyethylene master batch according to the weight ratio of 1:50, and blow-molding to prepare the insect-repellent agricultural mulching film.
Comparative example 2 (Areca-free fruit and Cinnamomum camphora fruit)
A preparation method of an insect-repelling agricultural mulching film comprises the following steps:
1. adding 100ml bamboo vinegar into 311g calcium oxide, pouring 15ml alcohol, distilling at 95 deg.C under reduced pressure, using condensate at-25 deg.C, and recovering to obtain solution A;
2. adding 1g of benzoin into 14ml of the solution A, stirring for 6h at 60 ℃, filtering, slowly adding 51ml of water into the filtrate at 2ml/min, and stirring and mixing to obtain slurry;
3. and (3) mixing the slurry prepared in the step (2) with the polyethylene master batch according to the weight ratio of 1:50, and blow-molding to prepare the insect-repellent agricultural mulching film.
COMPARATIVE EXAMPLE 3 (without benzoin)
A preparation method of an insect-repelling agricultural mulching film comprises the following steps:
1. adding 100ml bamboo vinegar into 311g calcium oxide, pouring 15ml alcohol, distilling at 95 deg.C under reduced pressure, using condensate at-25 deg.C, and recovering to obtain solution A;
2. pulverizing 110g of Arecae semen and 230g of Cinnamomum camphora fruit, adding 100ml of water, ultrasonic extracting at 260W and 97 deg.C for 22h to obtain solution B;
3. adding the 51mlB solution into 14ml of the A solution at a rate of 2ml/min, and stirring and mixing to obtain slurry;
4. and (3) mixing the slurry prepared in the step (3) with the polyethylene master batch according to the weight ratio of 1:50, and blow-molding to prepare the insect-repelling agricultural mulching film.
Insect repelling experiment
Cabbage caterpillar larvae, cutworm larvae, aphids and whitefly adults are used as test insects to determine the pest repellency. The glass box (70cm × 70cm × 70cm) used for the experiment was separated into A, B chambers with a cardboard as a middle. The agricultural mulching films prepared in the examples 1 to 3 and the comparative examples 1 to 3 are respectively sleeved on beakers containing 100g of green vegetable leaves, 10 holes with the diameter of 5mm are punched on the mulching film and placed in the chamber A, the common mulching film is also sleeved on the beaker containing 100g of green vegetable leaves and placed in the chamber B, and 10 holes with the diameter of 5mm are punched on the mulching film. 50 tested insects are randomly placed into the glass square box through the insect placing channels of the yarn covers, and the insect placing openings are sealed. After the chamber A and the chamber B are communicated and 24 hours later, the chamber A and the chamber B are separated by a paperboard, the number of insects in the two chambers is recorded A, B, and the insect repelling rate is calculated by the following formula: the insect repelling rate (number of insects in the house B-number of insects in the house A)/number of insects in the house B multiplied by 100 percent, experiments are carried out for 3 times, and the average value is taken. The results are shown in Table 1.
The placing conditions of the agricultural mulching film are as follows: the temperature is-10 to 25 ℃, and the relative humidity is 60 +/-10%.
TABLE 1 insect repellent Effect of agricultural mulching films
As can be seen from table 1, the insect-repelling agricultural mulching film prepared in the embodiment of the invention has a good repelling effect on cabbage caterpillar larvae, cutworm larvae, aphids and whitefly adults, the repelling effect is not significantly reduced after the film is placed for 1 year, and the film still has a good repelling effect on four pests. The insect-repelling agricultural mulching films prepared in comparative examples 1 and 2 have different repelling and avoiding effects on four pests, which shows that the repelling and avoiding effects of the bamboo vinegar and extracts of areca fruits and cinnamomum camphora fruits have a synergistic and complementary effect. The insect-repellent agricultural mulching film of comparative example 3 has a remarkable repelling effect on pests only initially, and the repelling effect is drastically reduced as the standing time is prolonged.
While there have been shown and described what are at present considered to be the preferred embodiments of the present invention, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (8)
1. A preparation method of a long-acting insect-repelling agricultural mulching film is characterized by comprising the following steps:
s1, adding calcium oxide and alcohol into bamboo vinegar liquid, and then carrying out reduced pressure distillation and recovery to obtain liquid A;
s2, adding water into the crushed betel nut and cinnamomum camphora fruit, and performing ultrasonic extraction to obtain a solution B;
s3, adding the benzoin into the solution A, stirring for 4-8 h at 50-70 ℃, filtering, slowly adding the solution B into the filtrate at a rate of 1-3 ml/min, and stirring and mixing to obtain slurry;
and S4, adding the slurry into polyethylene master batches to blow-mold the mixture to prepare the long-acting insect-expelling agricultural mulching film.
2. The preparation method of the long-acting insect-repelling agricultural mulching film according to claim 1, wherein in step S1, the ratio of the bamboo vinegar to the calcium oxide to the alcohol is 100ml, (300-320) g, (10-20) ml.
3. The method for preparing a long-acting insect-repelling agricultural mulching film according to claim 1, wherein in step S1, the temperature of the reduced pressure distillation is 80-100 ℃, and the temperature of the condensate for the reduced pressure distillation is-30 ℃ to-10 ℃.
4. The preparation method of the long-acting insect-repelling agricultural mulching film according to claim 1, wherein in step S2, the proportion of the areca nuts, the cinnamomum camphora fruits and the water is (100-120) g (200-240) g to 100 ml.
5. The preparation method of the long-acting insect-expelling agricultural mulching film according to claim 1, wherein in the step S2, the ultrasonic power is 200-280W, the leaching temperature is 80-100 ℃, and the leaching time is 12-24 h.
6. The preparation method of the long-acting insect-repelling agricultural mulching film according to claim 1, wherein in the step S3, the ratio of the benzoin to the solution A to the solution B is 1g (10-20) ml (50-60) ml.
7. The preparation method of the long-acting insect-repelling agricultural mulching film according to claim 1, wherein in the step S4, the weight ratio of the slurry to the polyethylene masterbatch is 1 (10-100).
8. The long-acting insect-repelling agricultural mulching film prepared according to the preparation method of any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113214844A (en) * | 2021-04-29 | 2021-08-06 | 杭州绿兴环保材料有限公司 | Full-degradable mulching film for planting mountain rice and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111205541B (en) | 2022-03-11 |
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