High-utilization-rate sustained-release composite fertilizer comprising seafood offcuts

Abstract

The invention relates to the field of composite fertilizers, and specifically relates to a high-utilization-rate sustained-release composite fertilizer comprising seafood offcuts. The fertilizer is prepared from the raw materials of, by weight: 10-15 parts of diatomite with a specification of 1250-2000 meshes, 2-4 parts of soybean phospholipid, 10-13 parts of polylactic acid, 2-3 parts of ferrous sulfate, 10-12 parts of urea, 15-18 parts of ammonium bicarbonate, an appropriate amount of dichloromethane, 0.1-0.2 parts of dibenzoyl peroxide, 8-10 parts of boron-magnesium slag, 0.1-0.2 parts of phoxim, 2-4 parts of papaya seed powder , 1-3 parts of branchy paliurus leaf, 12-15 parts of sunflower meal, 18-20 parts of ammonium carbonate, 15-18 parts of potassium dihydrogen phosphate, 0.1-0.2 parts of diethylaminoethanol caproate, 16-18 parts of soybean cake powder, 4-5 parts of potassium fulvate, 20-22 parts of seafood offcuts, 1-3 parts of tenebrio molitor faeces, and 4-5 parts of auxiliary agents. The composite fertilizer provided by the invention has wide raw material sources, and can provide rich and comprehensive nutrients. According to a production process, diatomite and an envelope agent form dual coating upon the nutrients, such that the nutrients can be effectively protected. Fertilizer effect is more long-lasting; fertilizer utilization rate is high, soil balance is not damaged; and crop yield and quality can both be improved.

Description

technical field [0001] The invention relates to the field of compound fertilizers, in particular to a slow-release compound fertilizer with high utilization rate containing seafood leftovers. 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 f...

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