A slow-release compound fertilizer that is easy to absorb, promote growth and increase production

Abstract

The invention relates to the field of composite fertilizers, and concretely relates to an easily-absorbed growth-promoting production-increased sustained-release composite fertilizer. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000 mesh diatomite, 18-20 parts of urea, 15-18 parts of monoammonium phosphate, 12-15 parts of wheat bran, 6-8 parts of rice bran, 15-18 parts of ammonium bicarbonate, 10-12 parts of potassium sulfate, 12-15 parts of EVA emulsion, 10-12 parts of inferior-quality-product soybean milk, 12-15 parts of decomposed barnyard manure, 5-7 parts of chesnut peel, 4-5 parts of zinc sulfate, 2-3 parts of borax, 2-4 parts of starch aluminum octenyl succinate, 1-3 parts of sodium sulfonate of octadecylamide succinate, 1-3 parts of polyferric sulfate, 0.1-0.2 part of sodium ferrate and 4-5 parts of an auxiliary agent. The composite fertilizer is various in raw material kinds, nutrients in organic raw materials subjected to pretreatment is relatively refined and relatively well absorbed by crops, dual cladding on nutrients is formed by utilizing diatomite and a sustained-release coating agent, so that the fertilizer is relatively durable in fertility, has certain drought-resisting water-retaining capabilities, and is especially applicable to increase production of crops at arid regions.

Description

technical field [0001] The invention relates to the field of compound fertilizers, in particular to an easy-absorbing, growth-promoting, yield-increasing, 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 fert...

AI Technical Summary

Problems solved by technology

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