A multifunctional selenium-enriched slow-release rice special fertilizer

Abstract

The invention provides a multi-functional selenium-enriched slow-release special fertilizer for rice. The components by weight of raw materials are as follows: 80-200 parts of 3% chitosan-coated compound fertilizer, 200-450 parts of 4% chitosan-coated compound fertilizer , 50-350 parts of 5% chitosan coated compound fertilizer, 50-200 parts of sulfur water-soluble polymer double-coated urea, 50-150 parts of potassium chloride, 50-260 parts of monoammonium phosphate, 30 parts of sodium selenite -70 servings, EDTA chelated zinc? 5-20 parts, 8-30 parts of calcium magnesium phosphate fertilizer, 2-15 parts of borax. The invention has a reasonable nutrient distribution ratio, adopts chitosan as the coating material, adds silicon, zinc and other trace elements, enhances the stress resistance ability of rice, and has a remarkable effect of increasing production. Fertilization, no topdressing is required throughout the year, saving labor and effort.

Description

technical field [0001] The invention relates to the technical field of functional fertilizers, in particular to a special fertilizer for multifunctional selenium-enriched slow-release rice. Background technique [0002] Selenium is one of the 14 essential trace elements for the human body. It is known as "the fire of life", "the patron saint of the heart" and "the king of anti-cancer". Recognition ability, improve the synthesis of immune system cell antibodies, the proliferation of T cells, the level of antibodies in the blood, and double the phagocytosis and bactericidal ability of macrophages, thereby enhancing the immune function of the human body. Animal experiments have found that selenium can reduce the acute injury of aflatoxin B1, reduce the degree of hepatic central lobular necrosis and mortality. Selenium has a strong affinity with certain heavy metal elements, and combines with metals such as mercury and cadmium in the body to form metal selenoprotein complexes t...

AI Technical Summary

Problems solved by technology

[0004] 1. Increase the cost of fertilizer use, because foliar spraying requires a relatively high content of selenium fertilizer, such as the content of selenic acid or selenite in the Chinese patent CNZL01144575.0 "Selenium-enriched Plant Nutrition Regulator" is 4-25%;

[0005]2. Pollution of soil and water sources, because foliar fertilizer spraying can easily cause selenium fertilizer to fall into the ground, which will easily cause certain pollution to field runoff water and soil;

[0006]3. Poor safety, foliar fertilization easily leads to large residual amount of inorganic selenium, inorganic selenium has obvious poisonous effect on crops, and the safety is low

my country's traditional fertilizer products focus on the development of nutrient functions, but the application of fertilizers with a single nutrient function is difficult to overcome a series of problems such as soil continuous cropping obstacles, low water production efficiency, and environmental pollution under the current intensive agricultural conditions

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