Saline alkali soil amendment, preparation method thereof and saline alkali soil amending method

Abstract

A saline alkali soil amendment comprises a probiotic activity keeping liquid and complex probiotics, wherein the probiotic activity keeping liquid is used for keeping activity of complex probiotics and improving stress resistance of the complex probiotics, is a liquid prepared from a mixture of radix glycyrrhizae, cortex cinnamomi, radix codonopsis and Pennisetum flaccidum rhizome by fermentationwith the complex probiotics in water, and the mass ratio of the radix glycyrrhizae, the cortex cinnamomi, the radix codonopsis and the Pennisetum flaccidum rhizome is 1:1:1:1; the complex probiotics contain lactic acid bacteria, saccharomycetes, Bacillus subtilis, Bacillus megaterium and Bacillus licheniformis which are in the amount ratio being 1:1:1:1:1. The invention further provides a preparation method of the saline alkali soil amendment and a soil amending method for reducing salt content and pH of the soil by adopting the saline alkali soil amendment. By combining with the soil amendingmethod, the prepared complex probiotics can keep good activity in the soil, and pH and salt concentration of the soil are reduced effectively.

Description

Technical field [0001] The invention relates to the technical field of soil improvement, in particular to a saline-alkali soil amendment, a preparation method thereof, and a saline-alkali soil improvement method. Background technique [0002] Saline-alkali land refers to the phenomenon that the underground phreatic water level rises, the salinity is enhanced, and the climate is dry and the evaporation is intense, which causes the deep soil salt to migrate to the topsoil, and the topsoil salinization or alkalization degree increases. The essence of the formation of saline-alkaline soil is the redistribution of soluble salt in the soil, and the accumulation of soluble salt in the soil surface exceeds the normal value. For mildly saline soil, the soil salt content is 0.1%~0.2%; for moderately saline soil, the soil salt content is 0.2%~0.4%; for severely saline soil, the soil salt content is 0.4%~0.6%. The anions in saline-alkali soils mainly include chloride, sulfate, nitrate, carb...

AI Technical Summary

Problems solved by technology

Moreover, the soil in saline-alkali land has great viscosity after irrigation, and the soil is easy to harden after dehydration, which affects the respiration of plant roots.

So saline-alkali soil is not suitable for most plants to grow