Saline-alkali land soil desalting agent and preparation method thereof

Abstract

The invention discloses a saline-alkali land soil desalting agent and a preparation method thereof. The desalting agent is prepared from, by weight, 20-40 parts of mineral humus ultrafine powder, 50-70 parts of animal manure, 20-30 parts of crop straw, 0.04-0.1 part of a fertilizer decomposition agent, 0.5-2 parts of a salt-dissolving bacterial liquid, 5-10 parts of calcium chloride and 1-5 partsof a soil moisture retention agent; elements contained in the mineral humus ultrafine powder are activated so that the soil can be loosened to improve the gas permeability and water permeability; theanimal manure and the crop straw in the soil desalting agent provide nutrients needed for plant growth, the fertilizer effect is long, and in addition, the soil is loosened to improve the soil structure; the soil moisture retention agent in the soil desalting agent has strong water retention and storage functions, and the evaporation rate of water in the soil is reduced; through the cooperation ofthe mineral humus, the animal manure and the crop straw in the soil desalting agent, the soil structure is improved to better remove salt in the soil.

Description

technical field [0001] The invention relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil desalination agent and a preparation method thereof. Background technique [0002] The problems of soil salinization and secondary salinization are widespread in the world, especially in arid and semi-arid areas, where the problem is more serious. According to incomplete statistics from the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the Food and Agriculture Organization (FAO), the area of ​​saline-alkali land in the world is 954 million hectares. The problem of soil salinization and secondary salinization has become a resource constraint for the sustainable development of irrigated agriculture in the world. factor. China has a large amount of saline-alkali land, which is distributed in Northwest China, North China, Northeast West and coastal areas. Land salinization not only endangers the soil conditi...

AI Technical Summary

Problems solved by technology

China has a large amount of saline-alkali land, which is distributed in Northwest China, North China, Northeast West and coastal areas. Land salinization not only endangers the soil conditions on which crops rely for survival, but also inhibits the growth and development of crops, resulting in seedling shortage, production reduction, and death. Hinder the development of agricultural production. In areas with severe land salinization, large areas of farmland are abandoned and barren, which wastes a lot of land resources.

[0003] The use of common drip irrigation and underground pipe salt drainage has certain effects on the desalination of saline-alkali land, but the investment is large, the cycle is long, and the phenomenon of salt return is prone to occur. Commonly used microbial bacteria have limited effects on the treatment of sodium ions in the soil.

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