CN103951479B - Fertilizer and preparation method thereof - Google Patents
Fertilizer and preparation method thereof Download PDFInfo
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- CN103951479B CN103951479B CN201410186772.9A CN201410186772A CN103951479B CN 103951479 B CN103951479 B CN 103951479B CN 201410186772 A CN201410186772 A CN 201410186772A CN 103951479 B CN103951479 B CN 103951479B
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 241000894006 Bacteria Species 0.000 claims abstract description 25
- 241000209094 Oryza Species 0.000 claims abstract description 23
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 23
- 235000009566 rice Nutrition 0.000 claims abstract description 23
- 210000003608 fece Anatomy 0.000 claims abstract description 19
- 241000287828 Gallus gallus Species 0.000 claims abstract description 16
- 239000010871 livestock manure Substances 0.000 claims abstract description 16
- 241000233866 Fungi Species 0.000 claims abstract description 15
- 238000012258 culturing Methods 0.000 claims abstract description 13
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 8
- 239000011669 selenium Substances 0.000 claims abstract description 8
- 239000010902 straw Substances 0.000 claims abstract description 8
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 7
- 241000223259 Trichoderma Species 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000010903 husk Substances 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims abstract description 5
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000000855 fermentation Methods 0.000 claims description 21
- 230000004151 fermentation Effects 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002068 microbial inoculum Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 11
- 102000004190 Enzymes Human genes 0.000 abstract description 7
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- 239000003905 agrochemical Substances 0.000 abstract description 5
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- 239000000047 product Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
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- 238000003912 environmental pollution Methods 0.000 description 3
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- 239000005416 organic matter Substances 0.000 description 3
- 244000144977 poultry Species 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004021 humic acid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 235000019750 Crude protein Nutrition 0.000 description 1
- 241000247627 Elusimicrobia bacterium Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 208000031888 Mycoses Diseases 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
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- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 239000010905 bagasse Substances 0.000 description 1
- 229940088623 biologically active substance Drugs 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
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- 239000001913 cellulose Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000005056 compaction Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000019784 crude fat Nutrition 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 244000053095 fungal pathogen Species 0.000 description 1
- 244000000004 fungal plant pathogen Species 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000003053 immunization Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000013348 organic food Nutrition 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
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- 239000004016 soil organic matter Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of fertilizer, the raw material of described fertilizer comprises the composition of following mass ratio: edible fungus culturing waste material and wastes of crops 79% ~ 81%, chicken manure 17% ~ 18%, rice bran 1% ~ 4%.A preparation method for fertilizer, comprising: mixed edible bacteria cultivation waste material, wastes of crops, chicken manure and rice bran obtain initial feed; The bacterium liquid obtained after Trichoderma, other enzyme bacterium and selenium mixing is joined in described initial feed the mixture obtained for fermenting; Under vacuum conditions the described fermented mixture being used for fermenting is obtained fermented product; Described fermented product dehydration is obtained described fertilizer.Fertilizer of the present invention can not only recycle the waste material produced in agriculture production: as bacterium chaff, chicken manure, rice husk, rice straw, and its product avoids while the excessive use of chemical fertilizer causes soil pollution, the greatly less use of agricultural chemicals.Quality and the safety of agricultural-food are ensured, for environment protection also will make huge contribution.
Description
Technical field
The present invention relates to microbial fertilizer technical field, particularly, relate to a kind of fertilizer and preparation method thereof.
Background technology
At present, food-safety problem and environmental protection problem have become the focal issue that the whole society pays close attention to.After the seventies, be convenient to store and transport, use advantage that is simple, instant effect because chemical fertilizer has, add the differentiation of livestock and poultry cultivation feature and labor transfer of being engaged in agriculture, particularly large, the stench of animal dung water content, the inconvenience bringing process, transport, use, more exacerbate the difficulty of animal dung direct returning to farmland, causing at vast rural area Term Fertilization by livestock and poultry fertilizer is main change chemical fertilizer into and occupy an leading position.This not only makes soil compaction, and soil property declines year by year, and makes animal dung become waste from treasured, loses the outlet of application, makes it become " evil " from " profit ", there occurs the change of matter.Meanwhile, a large amount of uses in agricultural production process of chemical fertilizer and agricultural chemicals also bring potential threat to water quality, soil and environment etc.Pollution of agricultural products problem becomes increasingly conspicuous, and the poisonous residual components of agricultural-food is more and more higher, and quality of agricultural product progressively declines, and the market competitiveness also weakens thereupon.After popular life level improves and consumption idea changes, constantly increase demand that is nuisanceless, green, Organic food, the quality of this and agricultural-food forms sharp-pointed contradiction with safe reduction.
Summary of the invention
Technical problem to be solved by this invention is chemical fertilizer of the prior art because excessive use causes soil pollution and the usage quantity of agricultural chemicals is large, cannot ensure quality and the safety of agricultural-food, welding.
A technical scheme provided by the invention is as follows:
A kind of fertilizer, the raw material of this fertilizer comprises the composition of following mass ratio: edible fungus culturing waste material and wastes of crops 79% ~ 81%, chicken manure 17% ~ 18%, rice bran 1% ~ 4%.
Preferably, the mass ratio of described edible fungus culturing waste material and wastes of crops is 80%, and the mass ratio of chicken manure is 18%, and the mass ratio of rice bran is 2%.
Another technical scheme provided by the invention is as follows:
A preparation method for fertilizer, comprising: mixed edible bacteria cultivation waste material, wastes of crops, chicken manure and rice bran obtain initial feed; The bacterium liquid obtained after Trichoderma, other microbial inoculums and selenium mixing is joined in described initial feed the mixture obtained for fermenting; Under vacuum conditions the described fermented mixture being used for fermenting is obtained fermented product; Described fermented product dehydration is obtained described fertilizer.
Wherein, also comprised before described fermentation: adjustment carbon-nitrogen ratio is 25:1 ~ 30:1; Adjustment moisture content, the mass ratio making water in the described mixture for fermenting is 55% ~ 65%.
Preferably, the mass ratio making water in the described mixture for fermenting is 60%.
Preferably, described wastes of crops is rice husk or/and rice straw.
Wherein, treat that the mass ratio of the water in fermenting mixture is 45% ~ 55% described in the beforehand control of described fermenting process.
Preferably, treat described in control that the mass ratio of the water in fermenting mixture is 50%.
Wherein, the time of described fermentation is 15 ~ 25 days, or, 35 ~ 45 days.
Wherein, with the described mixture for fermenting without obvious chicken manure irritating smell, the described mixture for fermenting be fine and smooth uniform state for prompting, when the mass ratio of the organic matter of the described mixture for fermenting is more than 36.8%, the end of processing of described fermentation.
Beneficial effect of the present invention is as follows:
Fertilizer of the present invention can not only recycle the waste material produced in agriculture production: as bacterium chaff, chicken manure, rice husk, rice straw, and its product avoids while the excessive use of chemical fertilizer causes soil pollution, the greatly less use of agricultural chemicals.Quality and the safety of agricultural-food are ensured, for environment protection also will make huge contribution.
Accompanying drawing explanation
Fig. 1 is the schema preparing fertilizer of the preferred embodiments of the present invention.
Embodiment
Below in order to understand the present invention better, describe technical scheme in detail in conjunction with the embodiments.
Embodiment 1
The preparation method of the fertilizer in embodiment 1, comprises the steps:
Step S101:
Mixed edible bacteria cultivation waste material, wastes of crops, chicken manure and rice bran obtain initial feed.
Wherein, this initial feed is made up of the composition of following mass ratio: edible fungus culturing waste material and wastes of crops 79% ~ 81%, chicken manure 17% ~ 18%, rice bran 1% ~ 4%.A kind of preferred formation is: edible fungus culturing waste material and wastes of crops 80%, chicken manure 18%, rice bran 2%, the wastes of crops in embodiment 1 is preferably as rice husk or/and rice straw.
The main matrix of this edible fungus culturing waste material is the various agricultural stalks such as wood sawdust, straw, corn cob, bagasse, cotton seed hulls and vinasse, vinegar grain etc.After measured, these matrix are through the fermentative action of multiple-microorganism, Mierocrystalline cellulose, hemicellulose and wooden etc. all by degraded in various degree, crude protein, crude fat all significantly improve than before fermentation, crude fibre obviously reduces, and containing comparatively enriching the trace elements such as amino acid, mushroom polysaccharide and Fe, Ca, Zn, Mg.Utilize edible fungus culturing waste material to develop farm crop accessory substance to produce fertilizer, be conducive to recycling economy.
Cultivated the edible fungus culturing waste material of edible mushrooms, i.e. bacterium chaff, be good organic fertilizer, contained by the agricultural byproducts such as stalk, infusibility macromolecular cpd is become simple soluble substance by mycelium decomposition, thus can effectively improve the nutrient absorbed by farm crop.According to surveying and determination, support the discarded culture material organic content after mushroom up to more than 30%, be 3 times of straw directly returning to field, nitrogen content 1.5-1.8%, higher than freshly-slaughtered poultry excrement.
Step S102: the bacterium liquid obtained after Trichoderma, other enzyme bacterium and selenium mixing is joined in initial feed the mixture obtained for fermenting.
The preparation of bacterium liquid: to produce 1t fertilizer, adds the bacterium powder of 100g Trichoderma bacterium powder and other enzyme bacterium after in 50L water and adds trace element-selenium again, and mixes and obtain bacterium liquid.
What above-mentioned bacterium liquid is joined step S101 obtains is used in the mixture fermented.
Trichoderma Mycophyta, can produce multiple biologically active substance plant pathogenic fungi, bacterium and insect to antagonistic action, have raising crop anti-adversity, the effects such as Promoting plant growth, raising agricultural output.The fertilizer using Trichoderma fermentation edible fungus culturing waste material to prepare has following advantage:
(1) suppress multiple growth of pathogenic bacteria, reduce pathogenic fungi density in soil, prevent and treat native transmissibility fungal disease, there is the advantages such as happiness high humidity, sterilization are wide, noresidue compared with sterilant.
(2) growth-promoting functions, in use, wood fungus enzyme bacterium chaff fermentation fertilizer can control the generation of gray mold, increases the germination rate of seed, root and the length of seedling and the vigor of plant, improves nursery, plantation surviving rate.
(3) induce crop to produce resistance, reduce fungi etc. from root and damage, avoid the environmental pollution that a large amount of applying pesticides causes simultaneously.
(4) transform the objectionable impurities in degraded environment and pollutent, reach effect of improvement soil, can be rated as soil improvement agent.
Step S103: adjustment carbon-nitrogen ratio.Wherein, the scope of carbon-nitrogen ratio is 25:1 ~ 30:1.
Step S104: adjustment moisture content, makes the mass ratio of water in the mixture for fermenting between 55% ~ 65%.Wherein, preferred value is 60%.
Step S105: treat that fermentation fermented mixture obtains fermented product by described under vacuum conditions.
At the bottom of bottom, fermentation hole is with three layers of Waterproof canvas cushion.Before totally-enclosed fermentation hole, carry out vacuum-treat, embodiment 1 is bled by easy air extractor and is reached vacuum state three times.Will control moisture in fermenting process, the beforehand control of fermenting process is for the mass ratio of the water in the mixture that ferments between 45% ~ 55%, and preferred value is 50%, then gradually reduces in fermentation vat for the moisture in the mixture that ferments.To turning be carried out in fermenting process, prevent the too high fertilizer efficiency that causes of local temperature abnormal.Also to carry out period in fermenting process and carry out deodorization process.Wherein, leavening temperature should control between 20 ~ 30 degrees Celsius, and preferable range is at 23 ~ 26.5 degrees Celsius.
The time of fermentation is different with the difference in season, and the fermentation time in winter is preferably 35 ~ 45 days, and the fermentation time in summer is preferably 15 ~ 25 days.
After in earlier stage of fermenting process referring to mixture mixing, sealed fermenting starts to calculate, first 1 ~ 15 day of yeast phase winter, or, first 1 ~ 10 day of yeast phase summer.
In fermenting process, observation fermentation situation, and take off data.For the mixture of fermentation without obvious chicken manure irritating smell, be that fine and smooth uniform state is for pointing out for the mixture fermented, now, measure the content of the organic matter in the mixture for fermenting, when the mass ratio of the organic matter of the mixture for fermenting is more than 36.8%, the end of processing of this fermentation, obtains fermented product.
Step S106: fermented product dehydration is obtained fertilizer.
Fermented product is dewatered by the mode of nature and/or machinery and obtains fertilizer.The process of this dehydration is in order to ensure the activity of organic content and most of wooden enzyme bacterium.
As shown in table 1, compare similar bacterium chaff (edible fungus culturing waste material) fertilizer, in fertilizer in certain embodiments of the present invention, organic content exceedes more than 5.8% of traditional bacterium chaff fertilizer, decomposes agricultural wastes excellent effect under wooden enzyme bacterium coordinates with auxiliary enzymes bacterium.
Compare similar fertilizer rich in selenium, because fermentation produces a large amount of humic acids in fertilizer in certain embodiments of the present invention, reduce the expense that traditional fertilizer rich in selenium produces due to rearmounted humic acids, meanwhile, facilitate farm crop absorbing selenium element.
The present invention utilizes occurring in nature to have the beneficial microorganism decomposing organic function, under suitable control condition, organic composition unstable in organic waste is divided, decomposed and change into stable organic composition and divide, finally form the organic fertilizer of biological, chemical, physical property and nutrient content stable uniform, that is biological compost.
The present invention can not only recycle the waste material produced in agriculture production, as these wastes such as edible fungus culturing waste material, chicken manure, rice husk, rice straws, pass through microbial fermentation technology, be processed into a kind of Multifunction biological organic fertilizer, not only there are obvious economic benefits, also there is significantly ecological and environmental protection effect.After this fertilizer is manured into soil, the physico-chemical property of soil can also be improved further, increase soil organic matter content, promote formation and the conversion of agron and granule group, improve soil water-retaining performance and soil fertility, promote farm crop erosion resistance and volume increase; The excessive use that simultaneously can reduce chemical fertilizer causes many negative effects, as soil property pollution, environmental pollution etc.; The greatly less use of agricultural chemicals, has ensured quality and the safety of agricultural-food, for environment protection also will make huge contribution.
Use fertilizer of the present invention, the high-effect blade face photosynthesis of plant can be improved, impel plant to manufacture adequate nutrients; The unbalanced symptom of micro elements by plants can be improved fast, promote crop yield; Can cell tissue be strengthened, improve immunizing power, reach the abilities such as drought resisting, water conservation, cold-resistant, imperial disease, opposing adverse circumstance.
In sum, the preparation flow of fertilizer of the present invention is simple, and the fertilizer prepared, without while any environmental pollution, has processed processing waste, turned waste into wealth.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
The Performance comparision of table 1 fertilizer of the present invention and similar fertilizer
Claims (8)
1. a preparation method for fertilizer, is characterized in that, comprising:
Mixed edible bacteria cultivation waste material, wastes of crops, chicken manure and rice bran obtain initial feed;
The bacterium liquid obtained after Trichoderma, other microbial inoculums and selenium mixing is joined in described initial feed the mixture obtained for fermenting;
Under vacuum conditions the described fermented mixture being used for fermenting is obtained fermented product;
Described fermented product dehydration is obtained described fertilizer;
Wherein, also comprised before described fermentation: adjustment carbon-nitrogen ratio is 25:1 ~ 30:1; Adjustment moisture content, the mass ratio making water in the described mixture for fermenting is 55% ~ 65%; The temperature of described fermentation is 20 ~ 30 degrees Celsius.
2. the preparation method of fertilizer according to claim 1, is characterized in that, the mass ratio making water in the described mixture for fermenting is 60%.
3. the preparation method of fertilizer according to claim 1, is characterized in that, described wastes of crops is rice husk or/and rice straw.
4. the preparation method of fertilizer according to claim 1, is characterized in that: be 45% ~ 55% for the mass ratio of the water in fermenting mixture described in the beforehand control of described fermenting process.
5. the preparation method of fertilizer according to claim 4, is characterized in that: controlling the described mass ratio for the water in fermenting mixture is 50%.
6. the preparation method of the fertilizer according to claim 1 to 5 any one, is characterized in that: the time of described fermentation is 15 ~ 25 days, or, 35 ~ 45 days.
7. fertilizer prepared by the preparation method according to any one of claim 1 to 6, it is characterized in that, the raw material of described fertilizer comprises the composition of following mass ratio: edible fungus culturing waste material and wastes of crops 79% ~ 81%, chicken manure 17% ~ 18%, rice bran 1% ~ 4%.
8. fertilizer according to claim 7, is characterized in that, the mass ratio of described edible fungus culturing waste material and wastes of crops is 80%, and the mass ratio of chicken manure is 18%, and the mass ratio of rice bran is 2%.
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| CN201410186772.9A CN103951479B (en) | 2014-05-05 | 2014-05-05 | Fertilizer and preparation method thereof |
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| CN104230411B (en) * | 2014-09-27 | 2016-03-30 | 江西省农业科学院农业应用微生物研究所 | A kind of method utilizing edible fungi residue to produce selenium-enriched organic fertilizer |
| CN104496680A (en) * | 2014-12-22 | 2015-04-08 | 常熟市辛庄镇双浜农地股份合作社 | Manufacturing method of organic fertilizer rich in selenium element |
| CN106576473A (en) * | 2016-11-30 | 2017-04-26 | 雷艳艳 | Improvement method of harden soil |
| CN112250521A (en) * | 2020-10-22 | 2021-01-22 | 重庆丰衣谷农业科技有限公司 | Biological organic fertilizer and preparation method thereof |
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| CN101665374B (en) * | 2009-09-23 | 2011-08-17 | 新疆农业科学院微生物应用研究所 | Functional microbial fertilizer production by utilizing agricultural wastes |
| US9206088B2 (en) * | 2010-03-26 | 2015-12-08 | Cornell University | Plant propagation medium and methods of making and using it |
| CN103193543A (en) * | 2013-04-03 | 2013-07-10 | 郭同洲 | Pollution-free biological organic bacteria fertilizer with nutrient balancing function |
| CN103288543B (en) * | 2013-06-06 | 2015-04-01 | 贵州省烟草科学研究院 | Tobacco-coated controlled-release fertilizer as well as preparation method and application thereof |
| CN103319269B (en) * | 2013-07-11 | 2014-11-26 | 湖南省食用菌研究所 | Chicken manure, pig manure and pleurotus eryngii mushroom bran-containing organic fertilizer and preparation method thereof |
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