Saline-alkali soil improving method adopting chitosan soil deep scarification agent

Abstract

The invention provides a saline-alkali soil improving method adopting a chitosan soil deep scarification agent. The method comprises the steps of soil deep scarification agent application, fertilizer application, mechanical deep scarification and irrigation. The soil deep scarification agent is prepared from, by weight, 15-17 parts of chitosan, 5-8 parts of magnesium silicate, 10-15 parts of decomposed coal, 8-12 parts of montmorillonite, 15-18 parts of bacillus circulans bacterial liquid, 8-10 parts of oyster shell powder, 5-6 parts of ammonium persulfate, 7-13 parts of hydrolytic polyacry lonitrile, 1-5 parts of carboxymethylcellulose and 3-6 parts of salicylic acid. Fertilizer application is conducted in the way of applying fermentation fertilizer 20 kg / mu, wherein the fermentation fertilizer is prepared from 10 parts of plant ash, 5 parts of cow dung, 4 parts of rice husk and 9 parts of mushroom bar powder. After soil improvement is conducted for 3 months by means of the method, the total porosity of soil is 55-59%, and the average granular structure of soil is 3.5-4 mm in size.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali soil improvement, and relates to a chitosan soil subsoiling agent, in particular to a saline-alkali soil improvement method using the chitosan soil subsoiling agent. Background technique [0002] Existing improvement methods for saline-alkali soil include physical improvement, chemical improvement, and biological improvement. Physical improvement generally costs a lot, and chemical improvement is likely to cause chemical component residues. Therefore, biological improvement has become the mainstream of the market. Biological improvement in the traditional sense Measures to improve saline-alkali land are to improve saline-alkali land by planting plants in saline-alkali land. The method is easy to implement and has significant economic benefits, but generally it is necessary to plant saline-alkali-tolerant plants, and use the salt-absorbing ability of the plants themselves to restore the soil; ...

AI Technical Summary

Problems solved by technology

[0004] The soil improvement methods in the prior art have the following defects and deficiencies: the improvement of the soil structure in saline-alkali land is not obvious, the water holding capacity of the soil is small, and the soil capacity is large; the total porosity of the soil in saline-alkali land is small, and the soil aggregate structure is unstable and small; Soil improvement methods in the prior art are difficult to improve soil fertility and reduce the pH value of saline-alkali land in a short period of time

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