CN110698295A - Fertilizer for vegetable crops and preparation method thereof - Google Patents
Fertilizer for vegetable crops and preparation method thereof Download PDFInfo
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- CN110698295A CN110698295A CN201911104934.9A CN201911104934A CN110698295A CN 110698295 A CN110698295 A CN 110698295A CN 201911104934 A CN201911104934 A CN 201911104934A CN 110698295 A CN110698295 A CN 110698295A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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Abstract
The invention provides a fertilizer for vegetable crops, and relates to the technical field of fertilizers. The fertilizer comprises the following raw materials in parts by weight: 16-24 parts of decomposed cow dung, 12-20 parts of crop straws, 2-10 parts of ground phosphate rock, 5-10 parts of potassium ore powder, 8-16 parts of urea, 5-10 parts of humic acid, 1-2 parts of a microbial agent and 1-2 parts of trace elements. The fertilizer can meet the nutritional requirements of vegetable crops in the whole growth period after being applied in a base fertilizer form, and no additional fertilizer is needed; and because the straws and various mineral powders in the fertilizer coexist, the fertilizer has obvious water retention effect, thereby obviously saving the cost, improving the yield and the quality of vegetables, and simultaneously being used as a soil conditioner.
Description
Technical Field
The invention belongs to the technical field of fertilizers, and particularly relates to a fertilizer for vegetable crops and a preparation method thereof.
Background
Vegetables occupy an important place in human life, and are second only to food crops. At present, the large-scale planting of vegetables is developed rapidly, but the fertilization technology is relatively laggard, the fertilization of vegetable growers is completely applied blindly by experience, and the inorganic fertilizer occupies most markets. However, inorganic fertilizers have great disadvantages and drawbacks, which are mainly shown in the following aspects:
firstly, soil is damaged, so that the organic matter content of the soil is reduced, the proportion of various nutrients is disordered, the soil starts to be acidified and hardened, the physical and chemical properties of the soil and a soil microbial community are seriously damaged, the water retention, fertilizer retention and air permeability of the soil are poor, and the actual growth requirements of crops are difficult to meet;
secondly, crops have strong dependence on chemical fertilizers and pesticides, the consumption of the crops in the period must be increased year by year, otherwise, the crops grow slowly and have serious diseases and insect pests, and the yield is reduced;
and thirdly, the agricultural ecological environment is deteriorated, after the fertilizer is applied to farmlands, the actual utilization rate is only 30 percent on average, most of the fertilizer flows into rivers and lakes along with farmland drainage or remains in soil, plants and crops, so that not only is the environmental pollution brought, but also the safety and health of human beings and life are endangered, and the environmental pollution and the safety and the health of the human beings and the life are all barriers to sustainable development of agriculture.
At present, a plurality of organic fertilizers for vegetable crops exist, but the defects of large dosage and multiple fertilization exist.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a fertilizer for vegetable crops, which needs to be applied only once in the form of a base fertilizer during the entire growth period of vegetables and also has significant effects of soil improvement and soil-borne disease control, and a preparation method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a fertilizer for vegetable crops, which comprises the following raw materials in parts by weight: 16-24 parts of decomposed cow dung, 12-20 parts of crop straws, 2-10 parts of ground phosphate rock, 5-10 parts of potassium ore powder, 8-16 parts of urea, 5-10 parts of humic acid, 1-2 parts of a microbial agent and 1-2 parts of trace elements.
Preferably, the fertilizer comprises the following raw materials in parts by weight: 18-22 parts of decomposed cow dung, 14-18 parts of crop straws, 4-8 parts of ground phosphate rock, 6-9 parts of potassium ore powder, 10-14 parts of urea, 6-9 parts of humic acid, 1.2-1.6 parts of microbial agent and 1.1-1.8 parts of trace elements.
Preferably, the fertilizer comprises the following raw materials in parts by weight: 19-21 parts of decomposed cow dung, 15-17 parts of crop straws, 5-7 parts of ground phosphate rock, 7-8 parts of potassium ore powder, 11-13 parts of urea, 7-8 parts of humic acid, 1.3-1.5 parts of microbial agent and 1.3-1.6 parts of trace elements.
Preferably, the microbial agent comprises the following raw materials in percentage by weight: 19-30% of EM microbial agent, 7-20% of saccharomycetes, 17-22% of bacillus licheniformis, 12-20% of bacillus subtilis, 4-15% of streptomyces microflavus and 3-10% of azotobacter.
Preferably, the number of live bacteria in the EM microbial agent is 100-150 hundred million/mL, the number of live bacteria in the saccharomycetes is 1-3 hundred million/g, the number of live bacteria in the bacillus licheniformis is 4-9 hundred million/g, the number of live bacteria in the bacillus subtilis is 5-7 hundred million/g, the number of live bacteria in the streptomyces microflavus is 2-6 hundred million/g, and the number of live bacteria in the nitrogen fixing bacteria is 1-3 hundred million/g.
Preferably, the trace elements comprise one or a mixture of two or more of boric acid, borax, calcium chloride, magnesium sulfate, zinc sulfate, copper sulfate, ferric sulfate, manganese sulfate and ammonium molybdate.
The invention also provides a preparation method of the fertilizer, which comprises the following steps: crushing crop straws, sterilizing the crushed crop straws for 15min by steam, cooling the crop straws to 30 ℃, mixing the crop straws with the decomposed cow dung, the ground phosphate rock, the potassium mineral powder, the urea, the humic acid, the microbial agent and the trace elements, and granulating to obtain the fertilizer.
Preferably, the particle size of the crushed crop straws is 0.5-1 cm.
The invention provides a fertilizer for vegetable crops, which comprises the following raw materials in parts by weight: 16-24 parts of decomposed cow dung, 12-20 parts of crop straws, 2-10 parts of ground phosphate rock, 5-10 parts of potassium ore powder, 8-16 parts of urea, 5-10 parts of humic acid, 1-2 parts of a microbial agent and 1-2 parts of trace elements. The fertilizer takes decomposed cow dung and crop straws as main raw materials, wherein the crop straws do not participate in a decomposition process before preparation, and when the fertilizer is applied to a vegetable field, the crop straws are used as an organic fertilizer supplement to play a slow release effect; meanwhile, the fertilizer also contains a large amount of mineral powder and trace elements, so that the fertilizer can play a quick-acting supplementing role and can supplement various trace elements in a sustained-release manner. The fertilizer can meet the nutritional requirements of vegetable crops in the whole growth period after being applied in a base fertilizer form, and no additional fertilizer is needed; and because the straws and various mineral powders in the fertilizer coexist, the fertilizer has obvious water retention effect, thereby obviously saving the cost and improving the yield and the quality of vegetables.
The fertilizer can also be used as a soil conditioner, can effectively provide various nutrient elements for crops for a long time under the combined action of microorganisms contained in the fertilizer after being used, can also provide a large amount of various physiologically active substances such as biotin amino acid, vitamins, growth hormone, antibiotics and the like which are necessary for the growth of the crops, and can also effectively reduce root pests. After long-term use, the soil with reduced quality, such as acid-alkalization or salinization, is improved, the agricultural requirement of continuous development is met, and the method has good popularization and application prospects.
Detailed Description
The invention provides a fertilizer for vegetable crops, which comprises the following raw materials in parts by weight: 16-24 parts of decomposed cow dung, 12-20 parts of crop straws, 2-10 parts of ground phosphate rock, 5-10 parts of potassium ore powder, 8-16 parts of urea, 5-10 parts of humic acid, 1-2 parts of a microbial agent and 1-2 parts of trace elements.
The fertilizer comprises decomposed cattle manure, and the weight portion of the decomposed cattle manure is preferably 18-22 parts, more preferably 19-21 parts, and most preferably 20 parts. The preparation method of the decomposed cow dung in the fertilizer is not particularly limited, and the conventional composting or composting method in the field can be utilized.
The fertilizer comprises crop straws, wherein the crop straws are preferably 14-18 parts by weight, more preferably 15-17 parts by weight, and most preferably 16 parts by weight. The crop straws are preferably dried corn straws, sorghum straws, peanut straws or tomato straws, the drying method of the crop straws is not particularly limited, and the crop straws can be dried or dried in the sun, and the water content is preferably below 10%. The straw fertilizer can play a role of a water retention agent, and can generate a nutrient slow release effect due to the timeliness of straw decay.
The fertilizer comprises phosphorus ore powder, wherein the phosphorus ore powder is preferably 4-8 parts by weight, more preferably 5-7 parts by weight, and most preferably 6 parts by weight. The source of the ground phosphate rock is not particularly limited in the invention.
The fertilizer comprises potassium ore powder, wherein the weight part of the potassium ore powder is preferably 6-9 parts, more preferably 7-8 parts, and most preferably 7.5 parts.
The fertilizer comprises urea, wherein the urea is preferably 10-14 parts by weight, more preferably 11-13 parts by weight, and most preferably 12 parts by weight. The urea provided by the invention is used as a quick-acting N fertilizer, and can promote the crop straws to be quickly decomposed in soil. The source of the urea is not particularly limited in the present invention, and conventional urea in the art may be used.
The fertilizer comprises humic acid, and the weight part of the humic acid is preferably 6-9 parts, more preferably 7-8 parts, and most preferably 7.5 parts. The source of the humic acid is not particularly limited in the present invention, and conventional humic acids in the art may be used.
The fertilizer comprises a microbial agent, wherein the weight part of the microbial agent is preferably 1.2-1.6 parts, more preferably 1.3-1.5 parts, and most preferably 1.4 parts. The microbial agent preferably comprises the following raw materials in percentage by weight: 19-30% of EM microbial agent, 7-20% of saccharomycetes, 17-22% of bacillus licheniformis, 12-20% of bacillus subtilis, 4-15% of streptomyces microflavus and 3-10% of azotobacter; more preferably, the microbial inoculum comprises 24-28% of EM microbial inoculum, 10-18% of saccharomycetes, 18-21% of bacillus licheniformis, 15-19% of bacillus subtilis, 10-13% of streptomyces microflavus and 6-9% of azotobacter; most preferably 26% of EM microbial inoculum, 16% of microzyme, 20% of Bacillus licheniformis, 18% of Bacillus subtilis, 12% of Streptomyces microflavus and 8% of azotobacter. In the invention, the number of live bacteria in the EM microbial inoculum is preferably 100-150 hundred million/mL, the number of live bacteria in the yeast is preferably 1-3 hundred million/g, the number of live bacteria in the Bacillus licheniformis is preferably 4-9 hundred million/g, the number of live bacteria in the Bacillus subtilis is preferably 5-7 hundred million/g, the number of live bacteria in the Streptomyces microflavus is preferably 2-6 hundred million/g, and the number of live bacteria in the azotobacter is preferably 1-3 hundred million/g. The microbial agent can achieve various effects, generate antioxidant substances, remove the oxide substances, eliminate putrefaction, inhibit pathogenic bacteria, form a good environment suitable for growth of animals and plants, and simultaneously generate a large amount of beneficial substances which are easily absorbed by the animals and plants, such as amino acids, organic acids, polysaccharides, various vitamins, various biochemical enzymes, growth promotion factors, antibiotics, antiviral substances and the like, so that the immune function is improved, and the healthy growth of vegetables is promoted; can also produce control effect on various soil-borne diseases; promoting the root system of the vegetable to form mycorrhiza.
The fertilizer comprises trace elements, wherein the weight part of the trace elements is preferably 1.1-1.8 parts, more preferably 1.3-1.6 parts, and most preferably 1.5 parts. The trace elements preferably comprise one or a mixture of two or more of boric acid, borax, calcium chloride, magnesium sulfate, zinc sulfate, copper sulfate, ferric sulfate, manganese sulfate and ammonium molybdate. The source of the trace elements is not particularly limited in the present invention, and conventional reagents in the art may be used.
The invention also provides a preparation method of the fertilizer, which comprises the following steps: crushing crop straws, sterilizing the crushed crop straws for 15min by steam, cooling the crop straws to 30 ℃, mixing the crop straws with the decomposed cow dung, the ground phosphate rock, the potassium mineral powder, the urea, the humic acid, the microbial agent and the trace elements, and granulating to obtain the fertilizer.
In the invention, the particle size of the crushed crop straws is preferably 0.5-1 cm.
The invention also provides the application of the fertilizer or the fertilizer prepared by the preparation method in improving the yield of vegetables. In the application, the fertilizer is preferably applied as a base fertilizer, and the application amount is preferably 400-600 kg/mu, and more preferably 500 kg/mu.
The fertilizer for vegetable crops and the preparation method thereof provided by the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
Example 1
(1) Stacking the cow dung into piles, covering plastic cloth, turning the piles once when the temperature is raised to 60 ℃, and continuously fermenting for more than 10 days to obtain decomposed cow dung;
(2) pulverizing corn stalk into small granules of about 0.5cm, steam sterilizing at 121 deg.C for 15min, and naturally cooling to 30 deg.C;
(3) 160kg of decomposed cow dung, 200kg of crop straws, 2kg of phosphate rock powder, 5kg of potassium mineral powder, 12kg of urea, 6kg of humic acid, 1kg of microbial inoculum (the weight percentage content is 25 percent of EM microbial inoculum, 120 hundred million/mL of viable bacteria, 17 percent of yeast, 1.2 hundred million/g of viable bacteria, 20 percent of bacillus licheniformis, 9 hundred million/g of viable bacteria, 18 percent of bacillus subtilis, 7 hundred million/g of viable bacteria, 10 percent of streptomyces microflavus, 2 hundred million/g of viable bacteria, 10 percent of nitrogen-fixing bacteria and 3 hundred million/g of viable bacteria) and 1kg of trace elements (40g of borax, 150g of calcium chloride, 110g of magnesium sulfate, 200g of zinc sulfate, 150g of copper sulfate, 250g of ferric sulfate and 100g of ammonium molybdate) are mixed uniformly and then placed in a granulator.
Example 2
The conditions were the same as in example 1, except that the amounts of the respective raw materials were different in the pelletization: 200kg of decomposed cow dung, 160kg of crop straw, 6kg of phosphate rock powder, 7.5kg of potassium ore powder, 12kg of urea, 7.5kg of humic acid, 1.4kg of microbial inoculum (the weight percentage content is 30 percent of EM microbial inoculum, 120 hundred million/mL of viable bacteria, 12 percent of yeast, 1.2 hundred million/g of viable bacteria, 18 percent of bacillus licheniformis, 9 hundred million/g of viable bacteria, 20 percent of bacillus subtilis, 7 hundred million/g of viable bacteria, 15 percent of streptomyces microflavus, 2 hundred million/g of viable bacteria, 5 percent of nitrogen-fixing bacteria, 3 hundred million/g of viable bacteria) and 1.5kg of trace elements (90g of borax, 250g of calcium chloride, 200g of magnesium sulfate, 160g of zinc sulfate, 250g of copper sulfate, 300g of ferric sulfate and 250g of ammonium molybdate) are mixed uniformly and then placed in a granulator.
Example 3
The conditions were the same as in example 1, except that the amounts of the respective raw materials were different in the pelletization: 220kg of decomposed cow dung, 140kg of crop straws, 6kg of phosphate rock powder, 9kg of potassium mineral powder, 14kg of urea, 8kg of humic acid, 1.6kg of microbial agents (by weight percentage, 26% of EM microbial agents, 120 hundred million/mL of viable bacteria, 16% of yeast, 1.2 hundred million/g of viable bacteria, 20% of bacillus licheniformis, 9 hundred million/g of viable bacteria, 18% of bacillus subtilis, 7 hundred million/g of viable bacteria, 12% of streptomyces microflavus, 2 hundred million/g of viable bacteria, 8% of nitrogen-fixing bacteria and 3 hundred million/g of viable bacteria) and 1.8kg of trace elements (210g of borax, 300g of calcium chloride, 180g of magnesium sulfate, 120g of zinc sulfate, 190g of copper sulfate, 300g of ferric sulfate and 500g of ammonium molybdate) are mixed and then placed in a granulator.
The fertilizer prepared in examples 1 to 3 is applied to soil in the form of base fertilizer according to the amount of 400 kg/mu, 500 kg/mu and 600 kg/mu, and a blank control group and a conventional fertilization group (base fertilizer + top dressing form) are designed at the same time, and the yields of tomatoes, cucumbers, cabbages and cabbages are respectively counted in table 1:
TABLE 1 post-fertilization yields (kg/mu) for different vegetables
Amount of fertilizer used | 400kg | 500kg | 600kg | Blank control | Conventional fertilization |
Tomato | 14628 | 15273 | 15639 | 2317 | 10364 |
Cucumber (Cucumis sativus) | 7725 | 8044 | 8137 | 1623 | 5729 |
Cabbage | 4261 | 4436 | 4480 | 1202 | 2966 |
Chinese cabbage | 7029 | 7433 | 7462 | 2039 | 5025 |
According to statistics, under different fertilizer dosages, the pest and disease incidence rates are almost the same, the pest and disease incidence rate in the whole growth period of the tomatoes is about 4.23%, the pest and disease incidence rate in the whole growth period of the cucumbers is about 5.19%, the pest and disease incidence rate in the whole growth period of the cabbages is about 2.3%, and the pest and disease incidence rate in the whole growth period of the cabbages is about 2.1%; in the blank control group, the incidence rate of the diseases and insect pests in the whole growth period of the tomatoes is about 67.4 percent, the incidence rate of the diseases and insect pests in the whole growth period of the cucumbers is about 71.9 percent, the incidence rate of the diseases and insect pests in the whole growth period of the cabbages is about 21.8 percent, and the incidence rate of the diseases and insect pests in the whole growth period of the cabbages is about 26.5 percent; in the conventional fertilization group, the incidence rate of the plant diseases and insect pests in the whole growth period of the tomatoes is about 46.2 percent, the incidence rate of the plant diseases and insect pests in the whole growth period of the cucumbers is about 42.8 percent, the incidence rate of the plant diseases and insect pests in the whole growth period of the cabbages is about 16.1 percent, and the incidence rate of the plant diseases and insect pests in the whole growth period of the cabbages is about 19.
The invention provides a fertilizer for vegetable crops, which can obviously improve the yield of the vegetable crops and reduce the incidence rate of plant diseases and insect pests in the whole growth period.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The fertilizer for the vegetable crops is characterized by comprising the following raw materials in parts by weight: 16-24 parts of decomposed cow dung, 12-20 parts of crop straws, 2-10 parts of ground phosphate rock, 5-10 parts of potassium ore powder, 8-16 parts of urea, 5-10 parts of humic acid, 1-2 parts of a microbial agent and 1-2 parts of trace elements.
2. The fertilizer as claimed in claim 1, which comprises the following raw materials in parts by weight: 18-22 parts of decomposed cow dung, 14-18 parts of crop straws, 4-8 parts of ground phosphate rock, 6-9 parts of potassium ore powder, 10-14 parts of urea, 6-9 parts of humic acid, 1.2-1.6 parts of microbial agent and 1.1-1.8 parts of trace elements.
3. The fertilizer as claimed in claim 1, which comprises the following raw materials in parts by weight: 19-21 parts of decomposed cow dung, 15-17 parts of crop straws, 5-7 parts of ground phosphate rock, 7-8 parts of potassium ore powder, 11-13 parts of urea, 7-8 parts of humic acid, 1.3-1.5 parts of microbial agent and 1.3-1.6 parts of trace elements.
4. The fertilizer according to any one of claims 1 to 3, wherein the microbial agent comprises the following raw materials in percentage by weight: 19-30% of EM microbial agent, 7-20% of saccharomycetes, 17-22% of bacillus licheniformis, 12-20% of bacillus subtilis, 4-15% of streptomyces microflavus and 3-10% of azotobacter.
5. The fertilizer of claim 4, wherein the number of viable bacteria in the EM microbial agent is 100-150 hundred million/mL, the number of viable bacteria in the yeast is 1-3 hundred million/g, the number of viable bacteria in the Bacillus licheniformis is 4-9 hundred million/g, the number of viable bacteria in the Bacillus subtilis is 5-7 hundred million/g, the number of viable bacteria in the Streptomyces microflavus is 2-6 hundred million/g, and the number of viable bacteria in the azotobacter is 1-3 hundred million/g.
6. The fertilizer according to any one of claims 1 to 3, wherein the trace elements comprise one or a mixture of two or more of boric acid, borax, calcium chloride, magnesium sulfate, zinc sulfate, copper sulfate, iron sulfate, manganese sulfate and ammonium molybdate.
7. A method for preparing a fertilizer according to any one of claims 1 to 6, comprising the steps of: crushing crop straws, sterilizing the crushed crop straws for 15min by steam, cooling the crushed crop straws to 30 ℃, mixing the crushed crop straws with decomposed cow dung, ground phosphate rock, potassium ore powder, urea, humic acid, a microbial agent and trace elements, and granulating to obtain the fertilizer.
8. The preparation method of claim 7, wherein the crushed crop straw has a particle size of 0.5-1 cm.
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112573976A (en) * | 2020-12-14 | 2021-03-30 | 奉节县承青蔬菜种植专业合作社 | Organic fertilizer for radish planting and preparation method thereof |
CN112592244A (en) * | 2020-12-18 | 2021-04-02 | 大同市农产品质量安全检验检测中心 | Vegetable organic fertilizer and preparation method thereof |
CN113277906A (en) * | 2021-05-29 | 2021-08-20 | 河南心连心化学工业集团股份有限公司 | Special fertilizer for purslane suitable for greenhouses in northern regions and application |
CN115124386A (en) * | 2022-06-30 | 2022-09-30 | 江苏科邦生态肥有限公司 | Stable long-acting functional fertilizer and preparation method thereof |
CN115490562A (en) * | 2022-10-20 | 2022-12-20 | 山东省农业科学院 | Soil conditioner for promoting plant growth and preparation process thereof |
CN116477996A (en) * | 2023-05-16 | 2023-07-25 | 云南省农业科学院农业环境资源研究所 | Vegetable yield-increasing compound biological fertilizer and preparation method thereof |
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CN104829398A (en) * | 2015-05-19 | 2015-08-12 | 楚长福 | Organic soil improvement fertilizer |
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CN104829398A (en) * | 2015-05-19 | 2015-08-12 | 楚长福 | Organic soil improvement fertilizer |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112573976A (en) * | 2020-12-14 | 2021-03-30 | 奉节县承青蔬菜种植专业合作社 | Organic fertilizer for radish planting and preparation method thereof |
CN112592244A (en) * | 2020-12-18 | 2021-04-02 | 大同市农产品质量安全检验检测中心 | Vegetable organic fertilizer and preparation method thereof |
CN112592244B (en) * | 2020-12-18 | 2022-11-25 | 大同市农产品质量安全检验检测中心 | Vegetable organic fertilizer and preparation method thereof |
CN113277906A (en) * | 2021-05-29 | 2021-08-20 | 河南心连心化学工业集团股份有限公司 | Special fertilizer for purslane suitable for greenhouses in northern regions and application |
CN113277906B (en) * | 2021-05-29 | 2022-07-22 | 河南心连心化学工业集团股份有限公司 | Special fertilizer for purslane suitable for greenhouses in northern regions and application |
CN115124386A (en) * | 2022-06-30 | 2022-09-30 | 江苏科邦生态肥有限公司 | Stable long-acting functional fertilizer and preparation method thereof |
CN115490562A (en) * | 2022-10-20 | 2022-12-20 | 山东省农业科学院 | Soil conditioner for promoting plant growth and preparation process thereof |
CN116477996A (en) * | 2023-05-16 | 2023-07-25 | 云南省农业科学院农业环境资源研究所 | Vegetable yield-increasing compound biological fertilizer and preparation method thereof |
CN116477996B (en) * | 2023-05-16 | 2024-02-09 | 云南省农业科学院农业环境资源研究所 | Vegetable yield-increasing compound biological fertilizer and preparation method thereof |
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