Sulphur-based gamma-biological nitrogenous fertilizer and preparation method thereof

Abstract

The invention discloses sulphur-based gamma-biological nitrogenous fertilizer and a preparation method thereof. The sulphur-based gamma-biological nitrogenous fertilizer comprises gamma-poly(glutamic acid), wheat straw extract, microbial agents and secondary elements, namely, nitrogen elements. The gamma-poly(glutamic acid) and the microbial agents are integrally prepared through the fermentation process. The wheat straw extract is obtained by extracting and processing young wheat straw seedlings. The secondary elements, namely, the nitrogen elements are obtained through related compound powder. The sulphur-based gamma-biological nitrogenous fertilizer comprises 0.1-5.0 parts of gamma-poly(glutamic acid), 2-20 parts of wheat straw extract, 2-8 parts of microbial agents, 40-60 parts of urea and 15-35 parts of ammonium sulfate, wherein the number of microorganisms in each gram of microbial agents is two billion or larger. By means of the sulphur-based gamma-biological nitrogenous fertilizer, the nitrogen nutrition utilization rate can be increased, and by means of the supplementary effect of synergistic interaction of the gamma-poly(glutamic acid) and the wheat straw extract, the soil microenvironment is improved, the nutrient absorption is promoted, the crop yield is increased, and the disease-resistant, stress-resistant, anti-interference and successive crop prevention capacity of plants is improved.

Description

technical field [0001] The invention relates to the technical field of microbial bacterial fertilizer production, in particular to a sulfur-based γ-biological nitrogen fertilizer and a preparation method thereof. Background technique [0002] In modern agricultural production, chemical fertilizers are playing an increasingly important role, among which the consumption of nitrogen fertilizer is the largest, about 30 million tons (pure conversion) per year. However, the average loss of nitrogen fertilizer is as high as 45% through volatilization, leaching and runoff, resulting in an annual loss of more than 13 million tons of nitrogen, which is equivalent to tens of millions of tons of urea. What is more serious is that chemical fertilizers have and will continue to It has brought many adverse consequences to our living environment, such as soil compaction, water pollution, agricultural product pollution, greenhouse effect and other issues. [0003] The commonly used nitrogen...

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Problems solved by technology

[0008] The production of γ-polyglutamic acid can be produced on a large scale by biological fermentation technology, which can not only improve the nitrogen utilization rate of fertilizers, but also have a certain water retention effect on plants, and can reduce the water consumption required for plant growth. However, as a functional additive for a suitable fertilizer, its role and efficiency are far from being fully realized; how to screen substances that can produce a synergistic effect with γ-polyglutamic acid and jointly develop a biological fertilizer to increase γ-polyglutamic acid The effective role of amino acid provides more effective and economical microbial fertilizer for the country and farmers, thus creating greater social and economic benefits

In my country, the direct economic loss caused by the low fertilizer utilization rate is nearly 100 billion yuan. According to statistics, the seasonal utilization rate of commonly used nitrogen fertilizers is only about 30%. pollute the living environment