Method for treating and improving saline-alkali soil

Abstract

The invention discloses a method for treating and improving saline-alkali soil. The technical scheme essentials include the steps of uniformly mixing a soil conditioner and a soil improvement agent, uniformly scattering the mixture on the surface of the saline-alkali soil, plowing the saline-alkali soil after standing treatment, and then conducting irrigation to eliminate salt, wherein the soil conditioner includes furfural residue, peat, animal waste, traditional Chinese medicine residue, sodium alginate, fulvic acid, a biological bacterium agent and water; and the soil improvement agent includes phosphogypsum, calcium superphosphate, polyacrylamide, lauryl alcohol phosphoric acid ester potassium, potassium dihydrogen phosphate, meerschaum powder, diatomite, attapulgite, bamboo fibers, sodium lignosulfonate and water. According to the invention, the soil conditioner and the soil improvement agent are applied to the saline-alkali soil, so that the salinity and pH-value of the soil arereduced, the soil fertility is increased, the soil structure is improved, the salt return of the plough layer is alleviated, the emergence rate of crops is improved, and the treatment efficiency is improved.

Description

Technical field [0001] The present invention relates to the technical field of saline-alkali land treatment, and more specifically, it relates to a method for treating and improving saline-alkali land. Background technique [0002] Saline-alkali land refers to the land where too much soluble salt accumulates on the surface of the soil, which is harmful to the growth of crops; factors such as climatic conditions, geographical conditions, soil texture, unreasonable farming techniques, and elevated groundwater levels can all lead to soil salinization; It is characterized by high alkalinity, high salt content, and serious loss of soil humus, making it difficult for most plants to survive in saline-alkali land. Therefore, saline-alkali land has become an important factor restricting the development of agriculture and animal husbandry. [0003] At present, the management of saline-alkali land mainly includes four aspects: physical improvement, water conservancy improvement, biological im...

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Problems solved by technology

[0003] At present, the control of saline-alkali land mainly includes four aspects: physical improvement, water conservancy improvement, biological improvement and chemical improvement; physical improvement mainly refers to the rectification of the soil layer, including methods such as leveling the land, deep plowing and sunning, and micro-area soil improvement, but these methods exist The problem of cumbersome operation and high labor intensity; water conservancy improvement refers to taking away the salt in the soil through water washing and leaching, so as to achieve the purpose of reducing soil salinity, but this method needs to use a lot of water, which will cause waste of water resources; biological Improvement is to plant saline-alkali-tolerant plants in saline-alkali land, so that the plants can solidify the land, reduce soil erosion, reduce the deposition of soluble salts, and achieve the purpose of reducing soil salinity, because this method is to reduce the salinity of the soil during the growth of plants , is greatly affected by environmental factors and plant varieties, the treatment time is long, and the treatment efficiency is low; chemical improvement refers to the addition of soil improvers such as gypsum and humic acid to the saline-alkali soil to make it complex with the salt ions in the saline-alkali soil, making it It is discharged with irrigation water, so as to achieve the purpose of reducing soil salinity, but this method needs to introduce chemical substances, and it is easy to cause secondary compaction of soil while removing soil salinity

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