Saline-alkali soil conditioner as well as preparation method and application thereof

Abstract

The invention discloses a saline-alkali soil conditioner as well as a preparation method and application thereof. The saline-alkali soil conditioner is prepared from the following raw materials in parts by weight: 50-80 parts of an organic fertilizer, 10-20 parts of calcium superphosphate, 10-20 parts of cottonseed dregs, 1-5 parts of trehalose and 0.5-2 parts of a compound microbial agent. According to the saline-alkali soil conditioner, soil microbial communities are optimized by adopting the compound microbial agent, the physical and chemical properties of soil are improved, the saline-alkali degree of the soil is reduced through the combined action of the compound microbial agent, the organic fertilizer, the calcium superphosphate, the cottonseed residues and the trehalose, the structure of the saline-alkali soil is improved, and the content of nutrient substances in the soil is increased; the formation of aggregates in the soil is promoted, and the effect of obviously improving the saline-alkali soil is achieved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a saline-alkali soil improver and its preparation method and application. Background technique [0002] The area of ​​China's arid regions accounts for 1 / 3 of the country's total area. The arid regions have arid climate, high soil evaporation intensity, high groundwater table and more soluble salts. Minerals rise to the surface with water to form salt damage. Therefore, saline-alkali soil is widely distributed in arid areas. [0003] Soil salinization leads to soil structure compaction, poor permeability, and weakened soil fertility. Saline soil cannot provide favorable growth conditions for the growth of cultivated land, forest land and other vegetation, thus causing adverse effects on cultivated land and forest land. agricultural productivity. Soil salinization and secondary soil salinization caused by irrigation are the main obstacles restricting the development of agric...

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Problems solved by technology

[0004] At present, the main means of salinity improvement of cultivated land is to wash and leaching the land to reduce the salinity content of the soil, and then plant saline-alkali-tolerant crops. However, this method has high requirements on water source and irrigation conditions, and its application range is limited. The water resources in Ningxin and other areas are difficult to meet the needs of saline-alkali improvement

Therefore, the improvement of salinity in water-deficient areas should be based on soil conditioning, and fertilizers should be used together with the planting of alkali-resistant plants. However, there are currently few special fertilizers for saline-alkali improvement, and the effect is not good, which can significantly improve saline-alkali soil. urgent need for fertilizers

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