Method for preparation of novel nano fertilizer synergist from shrimp shell as raw material

Abstract

The invention relates to a method for preparation of a novel nano fertilizer synergist from shrimp shell as a raw material, and the preparation method comprises the following steps: removing impurities in the shrimp shell, deproteinizing, washing, drying, crushing, decoloring, deproteinizing, oxidizing to obtain carboxymethyl chitosan, performing aeration, magnetizing the solution, and fermenting to obtain the nano fertilizer synergist. The nano fertilizer synergist prepared by nano bio technology from the renewable shrimp shell as the raw material has both the advantages of an organic fertilizer and a fertilizer synergist, has full nutrient elements, can avoid soil compaction caused by long-term application of inorganic fertilizers, promotes crop growth, has anti-drought, water-retention and soil-fertilizing properties, can increase the output and the quality of crops, reduces agricultural non-point source pollution, and has important significance for improvement of soil fertility and planting of green organic agricultural products.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and relates to a preparation method of a novel nanometer fertilizer synergist using shrimp shells and the like as raw materials. Background technique [0002] 1. my country is a big country in the production and use of chemical fertilizers, and chemical fertilizers have made a huge contribution to the increase and stability of my country's grain production. [0003] my country is a large agricultural country, and agriculture is the foundation of the national economy. With the development of science and technology, chemical fertilizers, as the most important means of production and production-increasing factors in modern agriculture, are playing an increasingly important role in agricultural production. The total output and consumption of agricultural products in my country account for more than one-third of the world. [0004] 2. The use of chemical fertilizers in my country has reached the l...

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Problems solved by technology

[0004] 2. The use of chemical fertilizers in my country has reached the limit, and the effect of increasing the production of chemical fertilizers is declining year by year

Although my country's arable land area is less than 10% of the world's total, the amount of chemical fertilizers used is close to 1 / 3 of the world's total, resulting in the excessive use of chemical fertilizers approaching the limit

[0006] 3. The use of chemical fertilizers is unreasonable and the utilization efficiency is extremely low

[0008] 4. Excessive use of chemical fertilizers has seriously threatened food security and the ecological environment

First, it causes a serious waste of resources and increases the cost of agricultural production

Second, it leads to the decline of soil physical and chemical properties and the reduction of agricultural production capacity.

The third is to cause serious agricultural non-point source pollution, threatening the ecological environment and human health

It not only seriously affects the quality of groundwater and agricultural products, and threatens the health of the general public, but also causes eutrophication of water bodies, affects the quality of cultivated land, and causes a decline in agricultural production capacity

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