High-efficiency saline-alkaline soil improvement method

Abstract

The invention relates to the technical field of soil treatment, and particularly relates to a high-efficiency saline-alkaline soil improvement method. The method comprises the following steps that desulfurized gypsum, zeolite and vinegar residues are mixed; then gluconic acid, expired yogurt and grape skin are added; the gluconic acid, the expired yogurt and the grape skin are degraded under the action of nitrogen-fixing alcaligenes faecalis for generating a large amount of free hydrophilic carboxyl groups; the carboxyl groups are introduced into the surfaces of the desulfurized gypsum, the zeolite and the vinegar residues under the action of the microorganisms for improving the hydrophilicity; the carboxyl groups have a metal complexing property, and finally a fermentation product which has good hydrophilicity and can adsorb metal salts by complexing is obtained; the fermentation product is put into porous moso bamboos; the porous moso bamboos are buried in planting pits; and then saline-alkaline tolerant plants are planted in the planting pits, so that improvement on saline-alkaline soil is completed. Water in surrounding soil can be gathered and absorbed, so that an effect of water retention and moisture preservation is achieved. With the increase of the concentration of the water in the soil, the concentration of salt in the soil can be reduced, the alkalization degree is reduced, the pH value of the soil is buffered, and the purpose of improving the saline-alkaline property is achieved.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a high-efficiency soil improvement method for saline-alkali land. Background technique [0002] Simply put, saline-alkali land is the soil, especially the land where too much soluble salt accumulates on the surface of the soil, which is harmful to the growth of crops. All kinds of saline-alkali soils are formed under certain natural conditions. The essence of their formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salt gradually accumulates on the soil surface in the salt-gathering area. build up. Factors such as climate action, unreasonable farming techniques, and rising groundwater levels can all lead to soil salinization. There are about 27 million hm of saline-alkali land in my country 2 , of which the cultivated land is 60 million hm 2 , 21 million hm of saline-alkaline wasteland 2...

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a high-efficiency soil improvement method for saline-alkali land in view of the problems that most of the current common saline-alkali land improvement methods have poor improvement effects, take a long time, consume too much water resources and affect the growth of crops.