Long-acting sustained-release compound fertilizer containing zeolite molecular sieve

Abstract

The invention relates to the field of compound fertilizers, and particularly relates to a long-acting sustained-release compound fertilizer containing a zeolite molecular sieve. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of diatomaceous earth of 1250-2000 meshes, 5-7 parts of zinc sulfate, 15-18 parts of diammonium hydrogen phosphate, 20-22 parts of urea, 8-10 parts of silkworm excrement fine powder, 18-20 parts of potassium nitrate, 4-6 parts of pineapple peel, 2-4 parts of fulvic acid, 10-12 parts of rotten cow dung, 3-4 parts of pea shell powder, 5-7 parts of blackstrap, 2-5 parts of purslane, 4-5 parts of gingko leaf, 1-3 parts of zeolite molecular sieve activation powder, 1-3 parts of silica sol, 6-8 parts of shellac, 10-12 parts of polyvinyl alcohol, 2-4 parts of medical stone powder, 6-8 parts of polymeric ferric silicate sulfate and 4-5 parts of auxiliary. The compound fertilizer is wide in raw material source and diversified in nutritional elements, double coating is formed by utilizing the diatomaceous earth and a zeolite molecular sieve activation powder-containing sustained-release coating agent in the production process, so that nutrition cannot easily lose in actual application, the fertilizer acts more durable, and the soil ecological environment cannot be destroyed. The long-acting sustained-release compound fertilizer is an environment-friendly and effective compound fertilizer, and can be used for remarkably improving the crop yield and quality and reducing production cost.

Description

technical field [0001] The invention relates to the field of compound fertilizers, in particular to a long-acting slow-release compound fertilizer containing zeolite molecular sieves. 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 fertilize...

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