CN103204735B - Active polypeptide water-soluble fertilizer and preparation method thereof - Google Patents
Active polypeptide water-soluble fertilizer and preparation method thereof Download PDFInfo
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- CN103204735B CN103204735B CN201310116458.9A CN201310116458A CN103204735B CN 103204735 B CN103204735 B CN 103204735B CN 201310116458 A CN201310116458 A CN 201310116458A CN 103204735 B CN103204735 B CN 103204735B
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Abstract
The invention discloses an active polypeptide water-soluble fertilizer and a preparation method thereof, belonging to the field of fertilizer production and processing. The active polypeptide water-soluble fertilizer disclosed by the invention is characterized by comprising the following components in percentage by weight: 10-20% of hydrolytic active polypeptides and 80-90% of mixtures of inorganic fertilizers and trace elements. The active polypeptide water-soluble fertilizer is mainly characterized in that the active polypeptides are added in the nutritional component of the water-soluble fertilizer to obtain the active polypeptide water-soluble fertilizer. The active polypeptides are obtained through neutralizing by using hydrolytic animal and plant proteins, filtering, and then, carrying out spray drying by using filtrate. The active polypeptide water-soluble fertilizer disclosed by the invention comprises the following components: 10-12% of active polypeptides and over 50% of nitrogen, phosphorus pentoxide and potassium oxide, wherein active substances are all dissolved into water. The efficiency of the active polypeptide water-soluble fertilizer disclosed by the invention is greatly higher than that of any other fertilizer with the same nutrient content; and the active polypeptide water-soluble fertilizer is reasonable in price, high in output-input ratio, strong in market competitiveness and easy for popularization on the market.
Description
Technical field
The present invention relates to a kind of agricultural fertilizer and preparation method thereof, particularly a kind of by adopting water-soluble fertilizer of active polypeptide that hydrolytic activity polypeptide and inorganic fertilizer and micro-mixture prepare and preparation method thereof.The invention belongs to production and the manufacture field of fertilizer.
Background technology
In Chinese international water soluble fertilizer meeting in 2011, doctor Li Yanting of INST OF AGRICULTURAL RESOURCES points out, the development of China's water soluble fertilizer can divided into three stages, the single inorganic salt product stage, by the simple miscible system of single inorganic salt develop into compound system stage that nutrient, auxiliary agent etc. form, to synthetic function developmental stage.Water soluble fertilizer should, to improving nutrient content, promote the future development of nutrition absorption from now on; The water soluble fertilizer that Application and Development natural active matter is produced is researched and developed new process of production simultaneously, to improving the future developments such as nutrient density.
Of the present invention focusing on added active polypeptide in the nutrition composition of water-soluble fertilizer.Obtain the water-soluble fertilizer of active polypeptide.Wherein active polypeptide, adopts hydrolysising animal-plant protein, after neutralization is filtered, obtains with filtrate spraying is dry.The composition of the water-soluble fertilizer of active polypeptide of the present invention is: containing active polypeptide 10%-12%, nitrogenous, Vanadium Pentoxide in FLAKES, potassium oxide are more than 50%, and active substance is entirely water-soluble.
Summary of the invention
For problems of the prior art, the object of this invention is to provide and a kind ofly formed by hydrolytic activity polypeptide and nitrogen phosphorus potassium, trace element etc., utilization rate of fertilizer is high, be easy to improve soil, improves the water-soluble fertilizer of active polypeptide of crop quality.
Realize the while of the present invention, the manufacture method of the water-soluble fertilizer of above-mentioned active polypeptide is also provided.
The water-soluble fertilizer of a kind of active polypeptide of the present invention, is characterized in that comprising: percentage ratio meter by weight, 10～20% hydrolytic activity polypeptide and the inorganic fertilizer of 80%-90% and micro-mixture;
The water-soluble fertilizer of described active polypeptide is prepared by following methods:
(1) preparation of hydrolytic activity polypeptide: the sulfuric acid that concentration the is 93-98wt% reaction that is hydrolyzed for animal/vegetable protein raw material, then add bicarbonate of ammonia neutralization, make acidity reach PH4～6; The filtrate obtaining after filtration again, spraying is dry to be obtained containing the more than 70% hydrolytic activity polypeptide pulvis of polypeptide;
(2) preparation of inorganic fertilizer and micro-mixture: prepare according to a certain percentage inorganic fertilizer and micro-mixture according to different plants and/or different soils;
(3) mix above component according to the mass percent of the each component containing in the water-soluble fertilizer of prepared active polypeptide, obtain the described water-soluble fertilizer of active polypeptide.
In the present invention, preferred, the described hydrolysis reaction of step (1) is according to animal/vegetable protein raw material: the weight ratio of 93-98wt% sulphuric acid soln: water=l:1:1.5 is mixed, and at 113～115 DEG C, is hydrolyzed 10～12 hours.
In the present invention, preferred, the described neutralization of step (1) refers to the 1.5-1 that adds sulfuric acid weight, and the bicarbonate of ammonia of 7 times carries out neutralization reaction 6～8 hours at 40～80 DEG C, is concentrated to 50% of original volume, and makes acidity reach PH4～6; Neutralizer is through being cooled to filtration at 40-60 DEG C, and the spray-dried moisture that obtains of filtrate is less than 2%, containing the more than 70% hydrolytic activity polypeptide pulvis of polypeptide.
In the present invention, preferred, the animal/vegetable protein raw material described in step (1) is one or more the mixture in hair-keratin, feather meal, dregs of beans, rapeseed meal or Castor seed Meal.
In the present invention, preferably, in inorganic fertilizer described in step (2) and micro-mixture, inorganic fertilizer is the mixture of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, those skilled in the art can prepare inorganic fertilizer and micro-mixture according to a certain percentage according to different plants and/or different soils, preferred, wherein the weight ratio of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer is 1～2:1～2:1～2; Described trace element comprises copper, iron, manganese, zinc, boron and molybdenum wherein one or more, by mass calculate, inorganic fertilizer: trace element=40～45:1.
In the present invention, preferred, described nitrogenous fertilizer is urea, and described phosphate fertilizer is that potassium primary phosphate and described potash fertilizer are potassium sulfate.
In the present invention, preferably, the mass percent of each component is: for example water-soluble fertilizer of active polypeptide per ton of hydrolytic activity polypeptide formulations powder 15%(adds 150 kilograms), inorganic fertilizer and micro-mixture account for for example water-soluble fertilizer of active polypeptide per ton of 85%(and add 850 kilograms), wherein for example water-soluble fertilizer of active polypeptide per ton of urea 36.5%(adds 365 kilograms), the for example water-soluble fertilizer of active polypeptide per ton of potassium primary phosphate 18.5%(adds 185 kilograms), the for example water-soluble fertilizer of active polypeptide per ton of potassium sulfate 28%(adds 280 kilograms), the water-soluble fertilizer of trace element 2%(active polypeptide per ton adds 20 kilograms), mix packaging, obtain active polypeptide water-soluble fertilizer.Preferably, described trace element is boric acid.
In the present invention, preferred, the water-soluble fertilizer of described active polypeptide is Liquid Fertilizer, powdery fertilizer or solid irregular particle fertilizer.(reduce the content of nitrogen phosphorus potassium, can make active polypeptide Liquid Fertilizer, the N-P-K content of Liquid Fertilizer is not more than 10% and is advisable).
In enzyme-added bio-fertilizer of the present invention, the effect of each component is as follows:
Described active polypeptide is for supplying with as direct utilization and quick-acting nutrients, and and the metal ion of inorganic nutrients form huge legendary turtle compound, described nitrogen phosphorus potassium and trace element provide the necessary nutrient of crop, the important component of soil are provided simultaneously.The product appearance of the water-soluble fertilizer of active polypeptide, has various ways: can be powdery, also can be solid irregular particle and Liquid Fertilizer.
Further, the invention allows for the described water-soluble fertilizer of active polypeptide in the application promoting in plant growth.
The water-soluble fertilizer of active polypeptide of the present invention is after research and development, and the demonstration result of tens counties and cities such as Beijing, Henan, Hunan, Hainan all obtains extraordinary effect at home, and main manifestations is as follows:
1, fertilizer efficiency such as is much higher than at other fertilizer of nutrient content: data statistics on probation in various crop shows, fertilizer efficiency is the more than 1.5 times of same other chemical fertilizer of nutrient.Nutrient that can equilibrium supply plant growth at whole crop growth period.Can greatly improve the output of crop, as wheat improves 16%, Ipomoea batatas raising 88%, potato improves 67%, and celery improves 48%, and capsicum improves 65%, and grape improves 32%, garlic raising 50% etc.
2, due to the effect of active polypeptide inner complex, the local flavor that can improve crop and taste, can improve the quality of crop.
3, due to polypeptide and organic effect in many ways, can improve and vegetable soil.
4, water-fertilizer integral, easy to use, reduce fertilising manipulation strength, save labour cost.
5, be applicable to any crop and be applicable to all soil, reasonable price, ratio for input and output is high, and the market competitiveness is strong, is easy to marketing.
Embodiment
The water-soluble fertilizer of a kind of active polypeptide of the present invention, percentage ratio meter by weight, comprising: 10～20% hydrolytic activity polypeptide and the inorganic fertilizer of 80%-90% and micro-mixture;
The water-soluble fertilizer of described active polypeptide is prepared by following methods:
(1) preparation of hydrolytic activity polypeptide: the sulfuric acid that concentration the is 93-98wt% reaction that is hydrolyzed for animal/vegetable protein raw material, then add in bicarbonate of ammonia and after be concentrated to 50% of original volume, make acidity reach PH4～6; The filtrate obtaining after filtration again, spraying is dry to be obtained containing the more than 70% hydrolytic activity polypeptide pulvis of polypeptide;
(2) preparation of inorganic fertilizer and micro-mixture: prepare according to a certain percentage inorganic fertilizer and micro-mixture according to different plants and/or different soils;
(3) mix above component according to the mass percent of the each component containing in the water-soluble fertilizer of prepared active polypeptide, obtain the described water-soluble fertilizer of active polypeptide.
In a specific embodiment of the present invention, described hydrolysis reaction is according to animal/vegetable protein raw material: the weight ratio of 93-98wt% sulphuric acid soln: water=l:1:1.5 is mixed, and at 113～115 DEG C, is hydrolyzed 10～12 hours.
In a specific embodiment of the present invention, described neutralization refers to the 1.5-1 that adds sulfuric acid weight, the bicarbonate of ammonia of 7 times carries out neutralization reaction 6～8 hours at 40～80 DEG C, neutralizer is through being cooled to filtration at 40-60 DEG C, obtain the filtrate of 1/2 amount of original volume, the spray-dried moisture that obtains is less than 2%, containing the more than 70% hydrolytic activity polypeptide pulvis of polypeptide.
In a specific embodiment of the present invention, the animal/vegetable protein raw material described in step (1) is one or more the mixture in hair-keratin, feather meal, dregs of beans, rapeseed meal or Castor seed Meal.
In a specific embodiment of the present invention, in inorganic fertilizer described in step (2) and micro-mixture, inorganic fertilizer is the mixture of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, those skilled in the art can prepare inorganic fertilizer and micro-mixture according to a certain percentage according to different plants and/or different soils, preferred, wherein the weight ratio of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer is 1～2:1～2:1～2; Described trace element comprises copper, iron, manganese, zinc, boron and molybdenum wherein one or more, by mass calculate, inorganic fertilizer: trace element=40～45:1.
In a specific embodiment of the present invention, described nitrogenous fertilizer is urea, and described phosphate fertilizer is that potassium primary phosphate and described potash fertilizer are potassium sulfate.
Described trace element includes but not limited to copper, the vitriol of iron, manganese, zinc, boron, molybdenum, trace element is determined and is supplemented according to Soils In The Region nutritional deficiency situation, such as this area's soil lacking boron, supplement boric acid, if lack zinc boron deficiency again, can supplement boric acid and add zinc sulfate, the supplementary ratio of boron and zinc also needs to determine according to Soils In The Region nutritional deficiency situation.
In a specific embodiment of the present invention, the mass percent of each component is: for example water-soluble fertilizer of active polypeptide per ton of hydrolytic activity polypeptide formulations powder 15%(adds 150 kilograms), inorganic fertilizer and micro-mixture account for for example water-soluble fertilizer of active polypeptide per ton of 85%(and add 850 kilograms), wherein for example water-soluble fertilizer of active polypeptide per ton of urea 36.5%(adds 365 kilograms), the for example water-soluble fertilizer of active polypeptide per ton of potassium primary phosphate 18.5%(adds 185 kilograms), the for example water-soluble fertilizer of active polypeptide per ton of potassium sulfate 28%(adds 280 kilograms), the water-soluble fertilizer of trace element 2%(active polypeptide per ton adds 20 kilograms), mix packaging, obtain active polypeptide water-soluble fertilizer.
In a specific embodiment of the present invention, the water-soluble fertilizer of described active polypeptide is Liquid Fertilizer, powdery fertilizer or solid irregular particle fertilizer.(reduce the content of nitrogen phosphorus potassium, can make active polypeptide Liquid Fertilizer, the N-P-K content of Liquid Fertilizer is not more than 10% and is advisable).
Further describe the present invention below in conjunction with specific embodiment, advantage and disadvantage of the present invention will be more clear along with description.But these embodiment are only exemplary, scope of the present invention are not formed to any restriction.It will be understood by those skilled in the art that lower without departing from the spirit and scope of the present invention and can the details of technical solution of the present invention and form be modified or be replaced, but these amendments and replacement all fall within the scope of protection of the present invention.
The raw material that the embodiment of the present invention is used
Raw material: the other materials such as rapeseed meal, dregs of beans, brown sugar, wheat bran, inorganic fertilizer and trace element can be bought and obtain from market.
Embodiment 1
To prepare 1 ton of water-soluble fertilizer of active polypeptide as example, its preparation method comprises the steps:
(1) preparation of hydrolytic activity polypeptide: with dregs of beans be raw material, according to dregs of beans: the ratio of 93wt% sulfuric acid: water=l:1:1.5 is under the condition of 113 DEG C, in enamel hydrolytic decomposition pot, be hydrolyzed after 12 hours and neutralize in enamel pot with the bicarbonate of ammonia of 1.62 times of sulfuric acid weight, be concentrated to 50% of original volume, now PH equals 6, obtains nitrogenous neutralizer.After filtration, spraying is dry, obtains moisture and is less than 2%, containing the more than 70% active polypeptide pulvis of polypeptide.
(2) preparation of inorganic fertilizer and micro-mixture:
365 kilograms, urea, 185 kilograms of potassium primary phosphates, 280 kilograms of potassium sulfate, 20 kilograms of mixing of micro-boric acid;
(3) 150 kilograms of hydrolytic activity polypeptide formulations, 850 kilograms, the inorganic fertilizer that step (2) prepares and micro-mixture, in double-spiral mixer, mix mixing, packaging, obtain quality and be: about 20% containing active polypeptide 10.5%, nitrogenous, Vanadium Pentoxide in FLAKES, potassium oxide, 10%, 20%, containing organic 12% the active polypeptide water-soluble fertilizer that is approximately.
Embodiment 2
To prepare 1 ton of water-soluble fertilizer of active polypeptide as example, its preparation method comprises the steps:
(1) preparation of hydrolytic activity polypeptide: with rapeseed meal be raw material, according to rapeseed meal: the ratio of 98wt% sulfuric acid: water=l:1:1.5 is under the condition of 115 DEG C, in enamel hydrolytic decomposition pot, be hydrolyzed after 10 hours and neutralize in enamel pot with the bicarbonate of ammonia of 1.5 times of sulfuric acid weight, be concentrated to 50% of original volume, now PH equals 5.5, obtains nitrogenous neutralizer.After filtration, spraying is dry, obtains moisture and is less than 2%, containing the more than 60% active polypeptide pulvis of polypeptide.
(2) preparation of inorganic fertilizer and micro-mixture:
332 kilograms, urea, 200 kilograms of potassium primary phosphates, 250 kilograms of potassium sulfate, mix with the trace element of 18 kilograms; Wherein trace element is made up of 1 to 1 boric acid, the zinc sulfate mixing.
(3) 200 kilograms of hydrolytic activity polypeptide formulations, 800 kilograms, the inorganic fertilizer that step (2) prepares and micro-mixture, in double-spiral mixer, mix mixing, packaging, obtain quality and be: about 20% containing active polypeptide 11%, nitrogenous, Vanadium Pentoxide in FLAKES, potassium oxide, 10%, 20%, containing organic 10.5% the active polypeptide water-soluble fertilizer that is approximately.
Test example 1
The water-soluble fertilizer of active polypeptide being prepared by above-described embodiment 1, after research and development, the demonstration result of multiple counties and cities such as Beijing, Henan, Hunan, Hainan all obtains extraordinary effect at home certainly, and main manifestations is as follows:
1, fertilizer efficiency such as is much higher than at other fertilizer of nutrient content: data statistics on probation in various crop shows, fertilizer efficiency is the more than 1.5 times of same other chemical fertilizer of nutrient.Nutrient that can equilibrium supply plant growth at whole crop growth period.Can greatly improve the output of crop, as wheat improves 16%, Ipomoea batatas raising 88%, potato improves 67%, and celery improves 48%, and capsicum improves 65%, and grape improves 32%, garlic raising 50% etc.
2, due to the effect of active polypeptide inner complex, the local flavor that can improve crop and taste, can improve the quality of crop.
3, due to polypeptide and organic effect in many ways, can improve and vegetable soil.
4, water-fertilizer integral, easy to use, reduce fertilising manipulation strength, save labour cost.
5, be applicable to any crop and be applicable to all soil, reasonable price, ratio for input and output is high, and the market competitiveness is strong, is easy to marketing.
For example, carry out wheat planting test in Henan, be divided into test group and control group, test group imposes the embodiment of the present invention 1 and prepares the water-soluble fertilizer of active polypeptide, three control groups impose respectively Common compound fertilizer, general bio-fertilizer and farm manure, the water-soluble fertilizer of test group per mu active polypeptide is with reference to 30 kilograms of usage quantitys, common 25 nutrient composite fertilizers of control group per mu are respectively 60-70 kg/acre with reference to usage quantity, general bio-fertilizer test group 200-250 kg/acre, 360 kgs/acre of farm manure experimental group, fertilization time, number of times is all identical, finally the wheat yield of each group is added up.
Being compared as follows shown in table (table 1) of active polypeptide water-soluble fertilizer of the present invention and other fertilizer.
The comparison of the water-soluble fertilizer of table 1 active polypeptide and other fertilizer
Claims (8)
1. the water-soluble fertilizer of active polypeptide, is characterized in that described water-soluble fertilizer comprises: percentage ratio meter by weight, 10～20% hydrolytic activity polypeptide and the inorganic fertilizer of 80%-90% and micro-mixture;
The water-soluble fertilizer of described active polypeptide is prepared by following methods:
(1) preparation of hydrolytic activity polypeptide: the sulfuric acid that concentration the is 93-98wt% reaction that is hydrolyzed for animal/vegetable protein raw material, then add bicarbonate of ammonia neutralization, make acidity reach PH4～6; The filtrate obtaining after filtration again, spraying is dry to be obtained containing the more than 70% hydrolytic activity polypeptide pulvis of polypeptide; Described hydrolysis reaction is according to animal/vegetable protein raw material: the weight ratio of 93-98wt% sulphuric acid soln: water=l:1:1.5 is mixed, and at 113～115 DEG C, is hydrolyzed 10～12 hours; Described neutralization refers to and adds the bicarbonate of ammonia of 1.5-1.7 times of sulfuric acid weight at 40～80 DEG C, to carry out neutralization reaction 6～8 hours, is concentrated to 50% of original volume, and makes acidity reach PH4～6; Neutralizer is through being cooled to filtration at 40-60 DEG C, and the spray-dried moisture that obtains of filtrate is less than 2%, and containing the more than 70% hydrolytic activity polypeptide pulvis of polypeptide;
(2) preparation of inorganic fertilizer and micro-mixture: prepare according to a certain percentage inorganic fertilizer and micro-mixture according to different plants and/or different soils;
(3) mix above component according to the mass percent of the each component containing in the water-soluble fertilizer of prepared active polypeptide, obtain the described water-soluble fertilizer of active polypeptide.
2. the water-soluble fertilizer of active polypeptide as claimed in claim 1, is characterized in that, the animal/vegetable protein raw material described in step (1) is one or more the mixture in hair-keratin, feather meal, dregs of beans, rapeseed meal or Castor seed Meal.
3. the water-soluble fertilizer of active polypeptide as claimed in claim 1, it is characterized in that, in inorganic fertilizer described in step (2) and micro-mixture, inorganic fertilizer is the mixture of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, and wherein the weight ratio of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer is 1～2:1～2:1～2; Described trace element comprises copper, iron, manganese, zinc, boron and molybdenum wherein one or more, by mass calculate, inorganic fertilizer: trace element=40～45:1.
4. the water-soluble fertilizer of active polypeptide as claimed in claim 3, is characterized in that, described nitrogenous fertilizer is urea, and described phosphate fertilizer is that potassium primary phosphate and described potash fertilizer are potassium sulfate.
5. the water-soluble fertilizer of active polypeptide as described in claim 1-4 any one, it is characterized in that, the mass percent of each component is: hydrolytic activity polypeptide pulvis accounts for 15%, inorganic fertilizer and micro-mixture account for 85%, wherein urea accounts for 36.5%, potassium primary phosphate accounts for 18.5%, potassium sulfate accounts for 28%, trace element accounts for 2%, mix packaging, obtain active polypeptide water-soluble fertilizer.
6. the water-soluble fertilizer of active polypeptide as claimed in claim 5, is characterized in that, described trace element is boric acid.
7. the water-soluble fertilizer of active polypeptide as described in claim 1-6 any one, is characterized in that, the water-soluble fertilizer of described active polypeptide is Liquid Fertilizer, powdery fertilizer or solid irregular particle fertilizer.
8. the water-soluble fertilizer of active polypeptide described in claim 1-6 any one is in the application promoting in plant growth.
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| CN103396228A (en) * | 2013-07-31 | 2013-11-20 | 常熟市常福有机复合肥有限公司 | Biological active peptide organic fertilizer |
| CN103896685B (en) * | 2014-04-17 | 2015-11-11 | 张彬 | A kind of organic-inorganic Water soluble fertilizer and preparation method thereof |
| CN105272478A (en) * | 2015-11-17 | 2016-01-27 | 烟台泓源生物肥料有限公司 | Water-soluble protein peptide fertilizer |
| CN105906463A (en) * | 2016-04-21 | 2016-08-31 | 烟台龙普生物科技有限责任公司 | Enzymatic hydrolysis active micro-molecular peptide organic water-soluble fertilizer and production method thereof |
| CN107954768A (en) * | 2017-11-02 | 2018-04-24 | 兰溪市顺光园艺技术有限公司 | A kind of preparation method of foliage application for pot flowers |
| CN107915526A (en) * | 2017-12-06 | 2018-04-17 | 新疆泰谷生物肥料有限公司 | Solanaceous vegetables Water-soluble fertilizer special and its preparation method and application |
| CN108606003A (en) * | 2018-04-28 | 2018-10-02 | 金华市景和科技有限公司 | A kind of preparation method for the conditioning agent improving plant radiation resistance |
| CN110128206A (en) * | 2019-06-06 | 2019-08-16 | 山东省果树研究所 | A kind of promotion grape expands liquid Water soluble fertilizer and preparation method thereof |
| CN114163268A (en) * | 2020-09-10 | 2022-03-11 | 深圳市芭田生态工程股份有限公司 | Protease polypeptide compound fertilizer and preparation method thereof |
| CN112142513B (en) * | 2020-09-27 | 2022-04-22 | 陕西科技大学 | Chelated foliar fertilizer for vegetables and preparation method and application thereof |
| CN112279713A (en) * | 2020-09-30 | 2021-01-29 | 广东施可达生物肥料集团有限公司 | Organic liquid fertilizer for roses and preparation method thereof |
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| CN101139221A (en) * | 2007-07-30 | 2008-03-12 | 刘润田 | Preparation method of solid polypeptide fertilizer |
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| US20080302151A1 (en) * | 2007-06-11 | 2008-12-11 | Timothy Allan Stemwedel | Soluble Liquid Fertilizer for Organic Agriculture Derived From Soy Meal |
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| EP0075508B1 (en) * | 1981-09-14 | 1986-02-19 | Laboratoire D'achat Pour L'agriculture - Lapa | Process for increasing corn yield and foliar absorption product therefor |
| CN1339420A (en) * | 2000-08-23 | 2002-03-13 | 李永丰 | Biollogical organic plant nutrient liquid |
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