Saline-alkali soil improver based on lake sludge and saline-alkali soil improvement method

Abstract

The invention provides a saline-alkali soil improver based on lake sludge and a saline-alkali soil improvement method. The raw material formula of the saline-alkali soil improver contains lake sludge,compound microbial agents, humic acid and a filler, wherein the compound microbial agent are bacillus subtilis, bacillus licheniformis, bacillus laterosporus, bacillus megatherium, bacillus mucilaginosus, lactobacillus acidophilus and nodule bacteria; and the weight percentages of the compound microbial agents and the lake sludge in the raw material formula are respectively 1%-2% and 40%-80%. Bycombining the improver with the improvement method, the improvement of the saline-alkali soil can be effectively realized, the remediation requirement of the saline-alkali soil is fundamentally solved, and the survival rates of crops planted in the saline-alkali soil are increased. Meanwhile, the cost is low, the reutilization of the lake sludge resource can be realized, and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to a soil improver, in particular to a saline-alkali soil improver. Background technique [0002] Saline-alkali land means that the land is affected by natural or human factors, causing salt substances to gradually penetrate into the soil, so that the soil contains more salt and alkali, and makes this type of land unusable. The saline-alkali land in my country is roughly distributed in the Northwest, Northeast, North China and coastal areas. The main reason for the formation of saline-alkali land is that the land in relatively arid areas is evaporated into water vapor and discharged into the air, but the salt in the water cannot Excluded and left in the soil, after a long period of accumulation, the salt in the soil gradually increases, thus forming a saline-alkali land. Because the saline-alkali soil itself contains too much salt, according to the principle of plant cell osmosis, it is difficult for plant cells to absorb inorgani...

AI Technical Summary

Problems solved by technology

Most of these amendments are common liquid fertilizers, farmyard manures or organic matter, and their nutrient content is relatively low. Although they can add a certain amount of nutrients to the soil, they ignore the improvement of soil physical and chemical properties, and the nutrients are not easy to release.

There are many kinds of beneficial microbial agents, and most of the reported or produced microbial agents have mediocre improvement effects, mainly because the microbial agents are difficult to survive and reproduce in the saline-alkaline soil environment, which limits their function. Although some microbial agents are more effective good but expensive

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