Selenium-enriched efficient sustained release compound fertilizer

Abstract

The invention relates to the field of compound fertilizers and particularly relates to a selenium-enriched efficient sustained release compound fertilizer which is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000-mesh diatomite, 20-25 parts of urea, 10-12 parts of ammonium dihydrogen phosphate, 2-4 parts of zinc sulfate, 6-8 parts of tertiary calcium phosphate, 10-12 parts of potassium chloride, 18-22 parts of dried pig manure, 15-17 parts of soybean meals, 10-12 parts of soybean straw powder, 10-12 parts of detoxified tung seed cake, 4-6 parts of Japanese banana leaf pulp, 3-5 parts of water hyacinth powder, 10-12 parts of hydroxymethyl cellulose, 4-5 parts of polyacrylamide, 0.1-0.2 part of ammonium bicarbonate, 0.2-0.3 part of camphor, 2-4 parts of selenium-enriched yeast, 1-2 parts of alkyldimethyl benzylammonium chloride, 2-3 parts of nanocarbon, 2-4 parts of zinc gluconate, 6-8 parts of table vinegar and 4-5 parts of additive. The compound fertilizer is prepared from easily available raw materials and is rich in nutrients; the nutrients which are doubly coated by using diatomite and a coating agent cannot be easily lost, thus the fertilizer effect lasts very long time; and the raw materials contain abundant selenium element after being fermented by the selenium-riched yeast, thus the selenium-enriched efficient sustained release compound fertilizer is capable of increasing the content of the selenium in crop fruits, increasing the economic value of vegetables and fruits, and remarkably improving the benefit.

Description

technical field [0001] The invention relates to the field of compound fertilizers, in particular to a selenium-enriched high-efficiency 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 fertilizers. However, ...

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