Long-acting modified sustained-release fertilizer coated by urea-formaldehyde resin
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A urea-formaldehyde resin and compound fertilizer technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as mismatching crop growth needs, unsatisfactory slow release effects, and difficulty in meeting different needs, etc. The effect of fixing, improving planting efficiency and preventing premature and ineffective loss of nutrients
Active Publication Date: 2014-09-10
辽宁营港锌硼酸科技开发有限公司
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However, the existing slow-release compound fertilizers still have certain shortcomings, mainly in that the nutrient ratio is relatively fixed, and it is difficult to meet the different needs of various soils and various crops; the slow-release effect is not satisfactory, and does not match the growth needs of crops , thereby reducing fertilizer efficiency, affecting crop growth, resulting in reduced production and income
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[0014] The compound fertilizer of this embodiment is made from the following raw materials in parts by weight (kg): 1250 mesh diatomite 15, ammonium phosphate 12, ammonium bicarbonate 15, superphosphate 8, linseed meal powder 8, corn cob 5, vegetable Seed meal 10, traditional Chinese medicine residue 4, bamboo chips 4, agarose 3, trishydroxymethylaminomethane 3, disodium edetate 2, urea-formaldehyde resin emulsion 15, disproportionated potassium abietate 2, dodecylsulfonic acid Sodium 0.3, polyamide 3, potassium iodate 2, tricalcium phosphate 3, zinc gluconate 3, auxiliary agent 5; the auxiliary agent is made of the following raw materials in parts by weight: poultry feather 15, 40% sulfuric acid solution 35, hydroxide Appropriate amount of sodium, keratinase 0.15, copper citrate 2, manganese citrate 1, zinc citrate 2, medical stone fine powder 22, sodium silicate 5, the preparation method is: first wash the poultry feathers with water, sterilize at high temperature, and then p...
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Abstract
The invention relates to the field of composite fertilizers, and concretely relates to a long-acting modified sustained-release fertilizer coated by urea-formaldehyde resin. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000 mesh diatomite, 10-12 parts of ammonium phosphate, 12-15 parts of ammonium bicarbonate, 8-10 parts of calcium superphosphate, 6-8 parts of flaxseed meal powder, 4-6 parts of cobs, 8-10 parts of rapeseed meal, 4-5 parts of traditional Chinese medicine residue, 2-4 parts of bamboo shreds, 3-5 parts of agarose, 1-3 parts of tris(hydroxymethyl)aminomethane, 2-4 parts of disodium ethylene diamine tetraacetate, 12-15 parts of urea-formaldehyde resin emulsion, 1-2 parts of disproportionated potassium rosinate, 0.2-0.3 part of sodium dodecanesulphonate, 2-3 parts of polyamide, 1-2 parts of potassium iodate, 3-4 parts of tricalcium phosphate, 2-3 parts of zinc gluconate and 4-5 parts of an auxiliary agent. The composite fertilizer is abundant in raw material kinds and comprehensive and rich in nutrients, contains abundant organics, and is capable of improving soil environment. Dual cladding on nutrients is formed by utilizing diatomite and a sustained-release agent in the production technology, the fertility is durable and stable in release, and the quality and the output of crops are effectively improved.
Description
technical field [0001] The invention relates to the field of compound fertilizers, in particular to a long-acting modified urea-formaldehyde resin-coated slow-release compound fertilizer. Background technique [0002] In modern agricultural production, compound fertilizer can be seen everywhere. It has the advantages of high nutrient content, less auxiliary components, high fertilizer utilization rate, and convenient storage and application. It plays an important role in promoting high and stable crop yields. Slow-release compound fertilizer is an important category of compound fertilizers, and it is also the focus of research on the development of my country's chemical fertilizer industry. Its slow-release principle is to coat a thin layer of hydrophobic substances on the surface of fertilizer particles, so that the internal nutrients are slowly released to the In the soil, nutrients are continuously supplied to crops, which effectively improves the utilization rate of ferti...
Claims
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