Soil curing method for saline and alkaline land by using polyvinyl alcohol soil scarification agent

Abstract

The invention provides a soil curing method for a saline and alkaline land by using a polyvinyl alcohol soil scarification agent. The soil curing method comprises a step of applying the soil scarification agent, wherein the soil scarification agent comprises the following components in parts by weight: 7-10 parts of polyvinyl alcohol, 2-4 parts of a bacillus licheniformis liquid, 12-19 parts of potato powder, 8-12 parts of modified starch, 6-8 parts of vermiculite, 14-18 parts of medical stones, 5-7 parts of ammonium ferrous sulfate, 2.5-3.5 parts of carboxymethylcellulose, 4-7 parts of gypsum and 6-9 parts of humic acid. The modified starch comprises 60% of acrylic acid modified starch and 40% of acetic acid modified starch. The viable content of the bacillus licheniformis liquid is 0.8 billion / ml. By adopting the soil curing method for curing the land for 4 months, the total porosity of the soil is 54-56% and the volume weight of the soil is 1.35-1.44 g / cm3.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali soil curing, and relates to a polyvinyl alcohol soil subsoiling agent, in particular to a method for saline-alkali soil maturation using the polyvinyl alcohol soil subsoiling agent. Background technique [0002] Soil maturation is the process of continuously improving the tillability and fertility of the soil through various technical measures, that is, the process of turning raw soil into mature soil. [0003] Saline-alkali soil has extremely low nutrient content and is easy to harden. The soil water, fertilizer, air and heat environment are not coordinated, the growth and development of crops is poor, and the yield is low and unstable. In addition, in the saline-alkali land in northern China, the method of backfilling with alien soil is often used to improve the salinity, but the backfill is also raw soil. In addition, in recent years, the infrastructure construction in the north has been ...

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Problems solved by technology

[0004] The soil maturation methods in the prior art have the following defects and deficiencies: the soil maturation effect in saline-alkali land is not ideal, the total porosity of the soil in saline-alkali land is small, and the soil volume is large; the soil aggregate structure is unstable and small; the water holding capacity is low; the prior art It is difficult to improve soil fertility in a short period of time by using advanced soil maturation methods, and at the same time reduce the pH value of saline-alkali land

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