JPH0657628B2 - Composting method - Google Patents
Composting methodInfo
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- JPH0657628B2 JPH0657628B2 JP59280083A JP28008384A JPH0657628B2 JP H0657628 B2 JPH0657628 B2 JP H0657628B2 JP 59280083 A JP59280083 A JP 59280083A JP 28008384 A JP28008384 A JP 28008384A JP H0657628 B2 JPH0657628 B2 JP H0657628B2
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- water content
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Description
【発明の詳細な説明】 産業上の利用分野 本発明は稲わら、ホテイアオイなどの植物体のコンポス
ト化方法に関するものである。TECHNICAL FIELD The present invention relates to a method for composting plant bodies such as rice straw and water hyacinth.
従来の技術とその問題点 従来稲わら等の植物体をコンポスト化する際には単独で
はうまく発酵しないため、牛糞を添加したり、C/N比
の調整を目的として石灰チツ素を添加していた。そして
経験的にその添加量を定めていたために、十分発酵しな
かつたり、発酵が終了するまでの時間が極めて長くなる
欠点があつた。Conventional technology and its problems Conventionally, when composting a plant such as rice straw, it does not ferment well by itself, so cow dung is added or lime titanate is added for the purpose of adjusting the C / N ratio. It was Since the amount to be added has been empirically determined, there are drawbacks such as insufficient fermentation and a very long time until fermentation is completed.
問題点の解決手段 ホテイアオイなどの水生植物を裁断し、乾燥した後、易
分解性有機物を添加してコンポスト化を行なう場合、混
合物の含水率が40〜63%かさ比重が0.2〜0.6が必
要であると共に適当な栄養源を与えることが重要であ
る。Means for Solving the Problems When water plants such as water hyacinth are cut and dried, and a readily decomposable organic substance is added for composting, the mixture has a water content of 40 to 63% and a bulk specific gravity of 0.2 to 0. 6 is needed and it is important to provide adequate nutrition.
この栄養源を示す指標としてBOD5を考え、混合物の
BOD5が発酵に及ぼす影響を調べたところ、混合物B
OD5と発酵温度には密接な関係があり、短期間で好気
性発酵させるためには、混合物BOD5が少なくとも4
5mg−O2/g−DS以上必要である。When BOD 5 was considered as an indicator of this nutrient source and the effect of BOD 5 of the mixture on fermentation was examined, it was found that the mixture B
There is a close relationship between OD 5 and fermentation temperature, and in order to carry out aerobic fermentation in a short period, the mixture BOD 5 should be at least 4 times.
It is required to be 5 mg-O 2 / g-DS or more.
本発明はこれに着目して、圃場残渣や農産廃棄物あるい
は水生植物を短期間で好気性発酵させるに当り、原料の
植物体と添加物を混合する際には、各々の含水率とBO
D5の値をもとに、混合物の含水率が40〜63%(好
ましくは、45〜60%)、混合物のBOD5が45m
g/g以上となるように混合割合を設定し、混合時には
混合物のカサ比重が0.2〜0.6(好ましくは0.2
5〜0.5)となるように混合した後、強制通気を行わ
しめて発酵させることを要旨とする。以下、本発明を実
施例により説明する。The present invention pays attention to this, and in aerobically fermenting field residues, agricultural wastes, or aquatic plants in a short period of time, when mixing raw material plants and additives, the respective water contents and BO
Based on the value of D 5 , the water content of the mixture is 40 to 63% (preferably 45 to 60%), and the BOD 5 of the mixture is 45 m.
The mixing ratio is set so as to be g / g or more, and the bulk specific gravity of the mixture at the time of mixing is 0.2 to 0.6 (preferably 0.2).
After mixing so as to be 5 to 0.5), the essential point is to ferment by performing forced aeration. Hereinafter, the present invention will be described with reference to examples.
実施例1 裁断後乾燥したホテイアオイを原料とし、添加物として
汚泥や汚泥コンポスト、鶏ふん、牛ふん、米ぬかを種々
の割合で混合し、500容量の発酵槽に投入した。発
酵槽下部より上向流で通気を行い、約3週間の発酵を行
つた。各条件に対する発酵経過をもとに、混合物の含水
率と発酵期間における最高温度の関係をまとめ第1図に
示す。また第2図には、混合物BOD5と50℃以上の
高温を保持した時間との関係を示す。Example 1 Water hyacinth that was dried after cutting was used as a raw material, and as additives, sludge and sludge compost, chicken dung, beef dung, and rice bran were mixed at various ratios and charged into a 500-volume fermenter. Aeration was carried out from the lower part of the fermenter with upward flow, and fermentation was carried out for about 3 weeks. Based on the fermentation process for each condition, the relationship between the water content of the mixture and the maximum temperature during the fermentation period is summarized in FIG. Further, FIG. 2 shows the relationship between the mixture BOD 5 and the time for which a high temperature of 50 ° C. or higher was maintained.
コンポスト化を行う場合には、 (1) 病源菌や寄生虫を殺菌し、衛生化すること、 (2) 有機物の分解を促進して安定化させ、取扱い性を
向上させること、 を達成しなければならない。この2つの目的に対し、最
も明確な指標となるのは、発酵温度であり、一般に(1)
に対しては、60〜65℃以上の高温発酵すること、
(2)に対しては微生物活性の高い50〜65℃を長時間
(120hr以上)保持することにより目的が達成され
ると考えられている。When composting, it is necessary to achieve (1) sterilizing pathogens and parasites and sanitizing them, and (2) promoting and stabilizing the decomposition of organic substances to improve their handleability. I have to. The most obvious indicator for these two purposes is the fermentation temperature, which is generally (1)
For, high-temperature fermentation of 60 ~ 65 ℃ or more,
Regarding (2), it is considered that the object can be achieved by keeping 50 to 65 ° C., which has high microbial activity, for a long time (120 hours or more).
第1図からは、混合物含水率を40〜63%とすること
により、60℃以上の高温発酵を達成することができ
る。特に添加物として汚泥、畜ふん等の病源菌や寄生虫
の多い有機物を添加する場合には、さらに高温を保持さ
せるという観点から混合物含水率を45〜60%とする
ことが好ましい。From FIG. 1, it is possible to achieve high temperature fermentation at 60 ° C. or higher by setting the water content of the mixture to 40 to 63%. In particular, when an organic matter containing pathogens such as sludge and animal dung or a large amount of parasites is added as an additive, the water content of the mixture is preferably 45 to 60% from the viewpoint of maintaining the high temperature.
次に第2図からは、混合物BOD5が、45mg−O2
/g−DS以上ある時はすべて50℃以上を120hr
以上保持し、十分な発酵性が得られることがわかる。逆
に混合物BOD5が、45mg−O2/g−DS以下に
なると、急激に発酵性が悪くなり、発酵温度が50℃以
上に達することさえ難しくなる。またこれらの傾向は、
第1図,第2図とも原料や添加物の種類には関係ない。Next, from FIG. 2, the mixture BOD 5 was 45 mg-O 2.
/ G-DS or more, all above 50 ℃ 120hr
It is understood that sufficient fermentability can be obtained by maintaining the above. On the contrary, when the mixture BOD 5 is 45 mg-O 2 / g-DS or less, fermentability rapidly deteriorates, and it becomes difficult to reach a fermentation temperature of 50 ° C or higher. And these trends are
Both FIG. 1 and FIG. 2 have no relation to the types of raw materials and additives.
以上により植物体原料と添加物を混合する際には混合物
含水率が40〜63%好ましくは、45〜60%、混合
物BOD5が45mg−O2/g−DS以上となるよう
に混合割合を設定することにより短期間で活発な好気性
発酵を行うことができる。Due to the above, when the plant material and the additive are mixed, the water content of the mixture is 40 to 63%, preferably 45 to 60%, and the mixture ratio is adjusted so that the mixture BOD 5 is 45 mg-O 2 / g-DS or more. By setting, active aerobic fermentation can be performed in a short period of time.
実施例2 裁断後乾燥したホテイアオイに、添加物として汚泥脱水
ケーキを容量で10%混合した場合について、圧密の程
度を数段階に変化させて、500容量の発酵槽に投入
し2週間発酵を行つた時の結果を第1表に示す。Example 2 Water hyacinth that was dried after cutting was mixed with 10% by volume of sludge dewatering cake as an additive, the degree of compaction was changed in several stages, and the mixture was put into a 500-volume fermenter and fermented for 2 weeks. Table 1 shows the results of the test.
投入混合物はすべて、含水率が59.8%、BOD5が
70.5mg−O2/g−DSであり、実施例1に述べ
た至適条件を満足している。第1表より、同じ混合条件
でも圧密の程度が小さく、したがつてカサ比重の小さい
混合物の場合には、混合物の含水率とBOD5が至適条
件を満足しても十分な発酵性が得られないことがわか
る。すなわちカサ比重の値は少なくとも0.2以上、好
ましくは0.25以上とすることが必要である。 All the charged mixtures had a water content of 59.8% and a BOD 5 of 70.5 mg-O 2 / g-DS, which satisfied the optimum conditions described in Example 1. From Table 1, even under the same mixing conditions, the degree of compaction is small, and therefore, when the mixture has a low bulk specific gravity, sufficient fermentability is obtained even if the water content and BOD 5 of the mixture satisfy the optimum conditions. I know I can't. That is, it is necessary that the value of the bulk specific gravity is at least 0.2 or more, preferably 0.25 or more.
これはカサ比重を大きくする程、単位容積当りに発生す
る熱量が多くなること、及び蓄熱性が良くなることが原
因と考えられるが、あまりカサ比重が大きすぎると通気
性が悪くなつて混合物の隅々まで酸素が供給されなくな
る。カサ比重の限界としては、汚泥のコンポスト化など
の例から、0.6程度が限界で好ましくは0.5以下と
するよう圧密状態を調整しなければならない。It is considered that this is because as the bulk specific gravity increases, the amount of heat generated per unit volume increases and the heat storage property improves, but if the bulk specific gravity is too large, the air permeability deteriorates and the mixture Oxygen is no longer supplied to every corner. As the limit of the bulk specific gravity, from the example of composting sludge and the like, the compaction state must be adjusted so that the limit is about 0.6 and preferably 0.5 or less.
以上により乾燥したホテイアオイのように、カサ比重が
0.1以下のカサ高な植物体をコンポスト化する場合に
は、添加物混合時においてカサ比重が0.2〜0.6、
好ましくは0.25〜0.5となるよう圧密状態を調整
することにより十分な発酵性を得ることが可能となつ
た。When composting a dry plant having a bulk specific gravity of 0.1 or less, such as dried water hyacinth, a bulk specific gravity of 0.2 to 0.6 when the additives are mixed,
It was possible to obtain sufficient fermentability by adjusting the compaction state so that it is preferably 0.25 to 0.5.
実施例3 やや乾燥した稲わらを約20mmに裁断し、汚泥、汚泥コ
ンポスト、あるいは乾燥した鶏ふんのいずれかを添加物
として種々の割合で混合し、500容量の発酵槽に投
入し8週間発酵を行つた時の結果を第3図及び第4図に
示す。Example 3 A slightly dried rice straw was cut into about 20 mm, and either sludge, sludge compost, or dried chicken dung was mixed at various ratios as an additive, and the mixture was put into a 500-volume fermenter and fermented for 8 weeks. The results when the test was conducted are shown in FIGS. 3 and 4.
第3図は混合物含水率と発酵期間における最高温度の関
係を示したもので、混合物含水率が40〜65%(好ま
しくは45〜60%)のときに高温発酵することがわか
る。実施例1のホテイアオイの場合に比べると、幾分含
水率が高くても高温発酵しやすいという結果を示してい
る。この原因はホテイアオイの場合、混合物含水率が6
0%をこえると、急激に圧密減容して通気性が悪くなる
のに対し、稲わらの場合は比較的繊維質が堅く、しつか
りしているために、急激な圧密減容は生じず、含水率6
5%程度までは、通気性が十分保たれるためと考える。FIG. 3 shows the relationship between the water content of the mixture and the maximum temperature during the fermentation period. It can be seen that high temperature fermentation is carried out when the water content of the mixture is 40 to 65% (preferably 45 to 60%). Compared to the case of water hyacinth of Example 1, the results show that high temperature fermentation is likely to occur even if the water content is somewhat high. This is because water hyacinth has a water content of 6 in the mixture.
When it exceeds 0%, the volume is rapidly reduced and the air permeability is deteriorated. On the other hand, in the case of rice straw, the fiber is relatively hard and the fiber is not tight, so no rapid volume reduction occurs. , Moisture content 6
It is considered that the air permeability is sufficiently maintained up to about 5%.
第4図は混合物BOD5と50℃以上を保持した時間と
の関係を示したもので、混合物BOD5が40mg−O
2/g−DS以上のときに、50℃以上を120hr以
上保持できることがわかる。FIG. 4 shows the relationship between the mixture BOD 5 and the time at which the temperature was kept at 50 ° C. or higher. The mixture BOD 5 was 40 mg-O.
It can be seen that when the ratio is 2 / g-DS or more, 50 ° C. or more can be maintained for 120 hours or more.
実施例1のホテイアオイの場合に比べると、やや低い限
界値を示しているが、安全性を考えると稲わらの場合
も、混合物BOD5が45mg−O2/g−DS以上と
することが好ましい。Compared with the case of water hyacinth of Example 1, it shows a slightly lower limit value, but considering safety, it is preferable that the mixture BOD 5 is 45 mg-O 2 / g-DS or more also in the case of rice straw. .
原料として用いた稲わらは、実施例1,2に用いたホテ
イアオイに比べて、ややカサ比重が大きく、添加物と混
合した時点でカサ比重が、0.2以上あり、さらに圧密
させて投入する必要はなかつた。しかし添加物として乾
燥鶏ふんを用いた場合は、両者を混合しても混合物含水
率は40%以下であつたため、含水率調整を目的として
水分の付加を行つた。The rice straw used as a raw material has a slightly higher bulk specific gravity than the water hyacinth used in Examples 1 and 2, and has a bulk specific gravity of 0.2 or more when mixed with an additive, and is further consolidated and added. There was no need. However, when the dried chicken dung was used as the additive, the water content of the mixture was 40% or less even if both were mixed, so that water was added for the purpose of adjusting the water content.
実施例4 十分乾燥したホテイアオイを原料、やや乾燥した牛ふん
を添加物とし、500容量の発酵槽に投入するに際し
ケース1は、本発明をもとに混合割合を設定して混合
し、さらに圧密を行つたのに対し、ケース2は本発明内
容を考慮せずに2週間発酵を行つたところ、第5図に示
す発酵温度が得られた。ただし原料及び添加物の性状は
第2表、ケース1,2それぞれの混合条件は第3表の通
りである。Example 4 When fully dried water hyacinth was used as a raw material and slightly dried beef dung was used as an additive, when it was charged into a 500-volume fermenter, Case 1 was mixed by setting a mixing ratio based on the present invention and further consolidated. On the other hand, in Case 2, when fermentation was carried out for 2 weeks without considering the content of the present invention, the fermentation temperature shown in FIG. 5 was obtained. However, the properties of the raw materials and additives are shown in Table 2, and the mixing conditions for cases 1 and 2 are as shown in Table 3.
第5図より、本発明により混合を行つたケース1は、極
めて発酵性が良く、本発明内容を考慮せず、単にホテイ
アオイに牛ふんを20%(容量比)混合したケース2に
比べて、高い発酵温度が得られている。また、生成物の
性状についてもケース2は、ホテイアオイの繊維が硬く
粗たんぱくも発酵前の量のうちわずか14%しか分解し
ていないのに対し、ケース1はホテイアオイの繊維がも
ろく切れやすく、また粗たんぱくも発酵に伴つて32%
が分解し消失していた。 From FIG. 5, the case 1 in which the mixing was carried out according to the present invention had extremely good fermentability, and it was higher than the case 2 in which 20% (volume ratio) of water hyacinth was simply mixed without considering the content of the present invention. The fermentation temperature is obtained. Regarding the properties of the product, in case 2, the water hyacinth fiber is hard and only 14% of the crude protein is decomposed before the fermentation, whereas in case 1, the water hyacinth fiber is fragile and easily broken. 32% of crude protein due to fermentation
Had decomposed and disappeared.
実施例1〜4はホテイアオイ及び稲わらを原料とした場
合の発酵状態を示したが、他の植物体原料を用いる場合
も同様に、本発明によれば短時間で十分な発酵を行うこ
とが可能である。特に十分乾燥したホテイアオイや麦わ
らを原料として用いる場合には、本発明の至適条件とす
るために、含水率調整として水分を添加したり、カサ比
重調整のために圧縮混合や、圧密積付などの措置を講ず
ることも考慮しなければならない。Although Examples 1 to 4 showed the fermentation state when water hyacinth and rice straw were used as raw materials, when other plant raw materials are used, similarly, according to the present invention, sufficient fermentation can be performed in a short time. It is possible. Especially when using sufficiently dried water hyacinth or straw as a raw material, in order to obtain the optimum conditions of the present invention, water is added to adjust the water content, or compression mixing is performed to adjust the bulk specific gravity, and consolidation is applied. It is necessary to consider taking the measures of.
発明の効果 而して本発明によれば、圃場残渣や農業廃棄物あるいは
水生植物をコンポスト化する場合、単独では発酵しない
ため、原料と有機性添加物の含水率BOD5の値をもと
に、混合物含水率が40〜63%(好ましくは45〜6
0%)、混合物BOD5が45mg/g以上となるよう
に混合割合を設定し、混合時には混合物のカサ比重が
0.2〜0.6(好ましくは0.25〜0.5)となる
ように圧密状態を調整し、強制通気を行うことにより短
期間で十分な好気性発酵を行うことができる効果を有す
る。EFFECTS OF THE INVENTION According to the present invention, therefore, when composting field residues, agricultural wastes, or aquatic plants, fermentation is not carried out by itself, and therefore the water content BOD 5 of the raw material and the organic additive is used as the basis. , The water content of the mixture is 40 to 63% (preferably 45 to 6).
0%), the mixing ratio is set so that the mixture BOD 5 is 45 mg / g or more, and the bulk specific gravity of the mixture is 0.2 to 0.6 (preferably 0.25 to 0.5) during mixing. By adjusting the compaction state and performing forced aeration, it is possible to perform sufficient aerobic fermentation in a short period of time.
第1図は混合物含水率と最高温度の関係を表わすグラ
フ、第2図は混合物BOD5と50℃以上保持時間の関
係を表わすグラフ、第3図は混合物含水率と最高温度の
関係を表わすグラフ、第4図は混合物BOD5と50℃
以上保持時間の関係を表わすグラフ、第5図は経過日数
と発酵温度の関係を表わすグラフである。1 is a graph showing the relationship between the water content of the mixture and the maximum temperature, FIG. 2 is a graph showing the relationship between the mixture BOD 5 and the holding time of 50 ° C. or more, and FIG. 3 is a graph showing the relationship between the water content of the mixture and the maximum temperature. , FIG. 4 shows the mixture BOD 5 and 50 ° C.
FIG. 5 is a graph showing the relationship between the above holding time and FIG. 5 is a graph showing the relationship between the elapsed days and the fermentation temperature.
Claims (2)
ばこ残幹などの農業廃棄物、あるいはホテイアオイ、ク
レソンなどの水生植物を原料として用いる好気性発酵処
理に於て、上記原料と添加物として用いる易分解性有機
物の含水率とBOD5の値をもとに、混合物の含水率が
40〜63%、混合物のBOD5が45mg-O2/g-DS以上となる
ように混合割合を設定し、カサ比重が0.2〜0.6と
なるように圧密状態を調整した後、好気性発酵を行なわ
しめることを特徴とするコンポスト化方法。1. The above raw materials and additives in an aerobic fermentation process using field residues such as rice straw and straw, agricultural waste such as mulberry waste tobacco residual stems, and aquatic plants such as water hyacinth and watercress as raw materials. Based on the water content of the easily decomposable organic substance used as a product and the value of BOD 5 , the water content of the mixture is
40-63%, the mixing ratio is set so that the BOD 5 of the mixture is 45 mg-O 2 / g-DS or more, and the consolidated state is adjusted so that the bulk specific gravity is 0.2-0.6. A method for composting, which comprises performing aerobic fermentation.
泥、畜糞等の有機性廃棄物、あるいはそれらを原料とし
て好気性発酵させたコンポストあるいは米・トーモロコ
シなどのぬか類を使用する特許請求の範囲第1項記載の
コンポスト化方法。2. Claims that use organic waste such as sewage sludge, livestock manure, etc., or compost fermented aerobically from them as raw materials, or bran such as rice, corn, etc. as the easily decomposable organic matter to be added. The method for composting according to item 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59280083A JPH0657628B2 (en) | 1984-12-28 | 1984-12-28 | Composting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59280083A JPH0657628B2 (en) | 1984-12-28 | 1984-12-28 | Composting method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61158886A JPS61158886A (en) | 1986-07-18 |
JPH0657628B2 true JPH0657628B2 (en) | 1994-08-03 |
Family
ID=17620069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59280083A Expired - Lifetime JPH0657628B2 (en) | 1984-12-28 | 1984-12-28 | Composting method |
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JP (1) | JPH0657628B2 (en) |
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CN104108996A (en) * | 2014-06-27 | 2014-10-22 | 江苏省农业科学院 | Vegetable cultivation medium based on water hyacinth residue, and preparation method thereof |
CN104649748A (en) * | 2015-02-11 | 2015-05-27 | 江苏金麦穗新能源科技股份有限公司 | Method for preparing organic fertilizer of rice and wheat straws |
CN104744170A (en) * | 2015-03-31 | 2015-07-01 | 川渝中烟工业有限责任公司 | Method for preparing konjak plant fertilizer by utilizing tobacco waste |
CN109574724A (en) * | 2019-01-29 | 2019-04-05 | 山东金圣生物科技有限公司 | A kind of biological organic fertilizer and preparation method with prevention and treatment subterranean pest-insect |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09227260A (en) * | 1996-02-27 | 1997-09-02 | Mitsui Eng & Shipbuild Co Ltd | Production of compost |
CN100352792C (en) * | 2006-01-25 | 2007-12-05 | 河南农业大学 | Equipment for producing horticulture ground substance by fermentation of corn stalk powder |
CN101987799B (en) * | 2009-07-29 | 2013-12-25 | 郑州大学 | Artificial turf as well as manufacturing method and use method thereof |
CN103708854B (en) * | 2013-12-13 | 2016-08-24 | 云南省烟草公司红河州公司 | The method that a kind of useless time fresh tobacco leaf produces nicotine type nicotinic foliage fertilizer |
CN105315093B (en) * | 2015-10-30 | 2016-08-24 | 哈尔滨工业大学 | Utilize the method that fermentation ferment quickly prepares cold district tobacco waste fertilizer |
CN110550989A (en) * | 2019-10-21 | 2019-12-10 | 刘二平 | Carbon-based tobacco ecological fertilizer and preparation method thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56120595A (en) * | 1980-02-22 | 1981-09-21 | Hitachi Chemical Co Ltd | Method of composting hard fermentation organic matter |
JPS56140097A (en) * | 1980-03-31 | 1981-11-02 | Ebara Mfg | Composting method |
JPS59190284A (en) * | 1983-04-08 | 1984-10-29 | 日立機電工業株式会社 | Fermentation cell |
JPS59190285A (en) * | 1983-04-08 | 1984-10-29 | 日立機電工業株式会社 | Waterplant composting method |
-
1984
- 1984-12-28 JP JP59280083A patent/JPH0657628B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104108996A (en) * | 2014-06-27 | 2014-10-22 | 江苏省农业科学院 | Vegetable cultivation medium based on water hyacinth residue, and preparation method thereof |
CN104649748A (en) * | 2015-02-11 | 2015-05-27 | 江苏金麦穗新能源科技股份有限公司 | Method for preparing organic fertilizer of rice and wheat straws |
CN104744170A (en) * | 2015-03-31 | 2015-07-01 | 川渝中烟工业有限责任公司 | Method for preparing konjak plant fertilizer by utilizing tobacco waste |
CN109574724A (en) * | 2019-01-29 | 2019-04-05 | 山东金圣生物科技有限公司 | A kind of biological organic fertilizer and preparation method with prevention and treatment subterranean pest-insect |
Also Published As
Publication number | Publication date |
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JPS61158886A (en) | 1986-07-18 |
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