Method for biologically improving saline-alkali soil

Abstract

The invention discloses a method for biologically improving saline-alkali soil. The method includes the steps of 1, deep ploughing and deep tilling the saline-alkali soil and making the saline-alkali soil exposed under the sun, 2, digging wells to lower the underground water level, 3, constructing tall ridges, 4, adding biological modifiers and turning over the soil after the biological modifiers are evenly broadcasted to effectively increase organic matter and nutrients in the soil, loosen the soil, enrich microbial flora in the soil, increase activity of the soil, and neutralize saline and alkaline through some activated adsorption base ions in the modifiers, and 5, planting oats to absorb part of the base ions in the soil, convert the base ions into substances needed by growth of the oats and reduce the content of saline and alkaline of the soil. The method can be suitable for saline-alkali soil formed due to different factors, and the saline-alkali soil is improved through physical measures, water conservation measures, utilization of the biological modifiers and plantation of the oats. The method has the advantages that improvement economic benefits can be achieved early, operation is easy to conduct, promotional reproductively is high, improvement is sustainable, effects can be accumulated, in situ saline-alkali soil improvement can be achieved, and improvement cost is reduced.

Description

technical field [0001] The invention relates to a soil regulating method, in particular to a method for biologically improving land salinization. Background technique [0002] Saline-alkali land refers to the accumulation of salt in the land, specifically referring to the salt contained in the soil that affects the normal growth of crops. According to the statistics of UNESCO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which 99.13 million hectares are in my country, and 7.6 million hectares of cultivated land are salinized. Nearly one-fifth of the arable land was salinized, among which the primary salinization type, secondary salinization type and various alkalization types accounted for 52%, 40% and 8% of the total area respectively. Some cultivated land is forced to become abandoned due to the aggravation of secondary salinization. [0003] Saline-alkali hazards have caused a large number of medium and low-yield fields and poor farmers, ...

AI Technical Summary

Problems solved by technology

The invention uses the improver to improve the soil from multiple angles such as soil structure and chemical methods, but because the improvement period required is long and the improvement method is relatively simple, and the alkalization degree of the soil to be treated needs to be evaluated before use. High professionalism, inconvenient operation, not conducive to wide application

[0007] In the current treatment of salinized soil, there are still problems that the improvement period is long, the improvement effect cannot be sustained, and the improvement cannot be promoted.

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