Long-acting sustained-release composite fertilizer comprising wood fiber

Abstract

The invention relates to the field of composite fertilizers, and specifically relates to a long-acting sustained-release composite fertilizer comprising wood fiber. The fertilizer is prepared from the raw materials of, by weight, 10-15 parts of diatomite with a specification of 1250-2000 meshes, 10-12 parts of potassium chloride, 18-20 of ammonium carbonate, 12-15 parts of crop straws, 2-4 parts of zinc sulfate, 10-12 parts of calcium superphosphate, 3-5 parts of boron-magnesium fertilizer, 1-3 parts of ferrous sulfate, 12-13 parts of rice bran, 6-8 parts of calcium hydrogen phosphate, 6-8 parts of composted goose dung, 2-3 parts of a BGB microbial agent, 1-3 parts of xylanase, 10-12 parts of wood vinegar liquid, 1-3 parts of wood fiber with a specification of 400 meshes, 10-12 parts of cellulose acetate, 15-18 parts of N-methylpyrrolidone, 1-2 parts of calcium lignosulfonate, 1-2 parts of ethyl para-hydroxybenzoate, 1-2 parts of nano-grade carbon, and 4-5 parts of an auxiliary agent. The composite fertilizer provided by the invention has wide raw material sources, and rich and multi-element nutrients. In a production process, with diatomite and a sustained-release coating agent comprising wood fiber and nano-grade carbon, dual coating can be formed upon the nutrients. The composite fertilizer has excellent and long-lasting sustained-release control capacity, and water-retention and drought-resistant capacities. The fertilizer effect is more long-lasting, and the fertilizer is green and highly efficient. With the fertilizer, crop yield and quality can be substantially improved.

Description

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