Biological organic slow-release fertilizer and preparation method thereof

Abstract

The invention discloses a biological organic slow-release fertilizer and a preparation method thereof. The biological organic slow-release fertilizer is prepared by mixing and fermenting urea, saw dust, epoxy resin, poly(glutamic acid), dyhydroxy formic acid, bran, high-molecule water-retaining agent, humic acid, straw ash, clay, monoammonium phosphate, calcium powder, potassium sulfate, ferrous sulfate and nitrogen-fixing bacteria fertilizer according to a certain weight part. The preparation method is simple; the prepared biological organic slow-release fertilizer can effectively supply lodging resistance, disease resistance and drought resistance to crops and is high in crop absorption rate; and furthermore, the utilization rate of the fertilizer is increased, and the harm to the soil is correspondingly reduced.

Description

technical field [0001] The invention relates to the field of organic fertilizer manufacturing, in particular to a bio-organic slow-release fertilizer and a preparation method thereof. Background technique [0002] Nitrogen is the most important nutrient element for crop growth. Urea is the most important variety of nitrogen fertilizer. Urea is suitable for all crops and all soils. It can be used as base fertilizer and topdressing fertilizer. It can be applied in both dry and paddy fields. However, urea is a molecule before transformation. In the state, it cannot be absorbed by the soil and is lost with water. The ammonia formed after transformation is also volatile. The loss of nitrogen in the soil is too high, the utilization rate is only 30%-40%, and the fertilizer effect period is only about 50 days. Waste also brings enormous pressure to the atmospheric environment and water environment, and is a serious non-point source pollution source. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0002] Nitrogen is the most important nutrient element for crop growth. Urea is the most important variety of nitrogen fertilizer. Urea is suitable for all crops and all soils. It can be used as base fertilizer and topdressing fertilizer. It can be applied in both dry and paddy fields. However, urea is a molecule before transformation. In the state, it cannot be absorbed by the soil and is lost with water. The ammonia formed after transformation is also volatile. The loss of nitrogen in the soil is too high, the utilization rate is only 30%-40%, and the fertilizer effect period is only about 50 days. Waste also brings enormous pressure to the atmospheric environment and water environment, and is a serious non-point source of pollution.