Saline-alkali paddy straw application method

Abstract

The invention discloses a saline-alkali paddy straw application method. The method includes the steps that mechanical harvesting is adopted, grass is cut and smashed, and a prepared quick straw rotting agent containing bone meal, raw sugar and the like is sprayed; straw is stacked and preprocessed, wherein the straw is stacked, compacted and subjected to heat preservation and moisture retention; the stacked and preprocessed straw is scattered in winter and turned over to enter paddies. According to the saline-alkali paddy straw application method, mechanical harvesting is adopted, grass is cut and smashed, the prepared quick straw rotting agent containing bone meal, raw sugar and the like is sprayed, straw is stacked and preprocessed, and the straw is stacked, compacted and subjected to heat preservation and moisture retention, so that decomposing bacteria reproduction is convenient, and the straw can be decomposed more quickly; then the stacked and preprocessed straw is scattered in winter and turned over to enter paddies, rotting is promoted, saline-alkali paddy rice planting is improved, and soil fertility is improved. Thus, the situations that the straw decomposition degree is low and rice root system growth is affected are avoided. Meanwhile, the straw utility rate is increased, the organic matter content of saline-alkali soil is increased, and saline-alkali soil is fertilized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for returning straw in a saline-alkali rice field. Background technique [0002] Due to the high saline-alkali content in saline-alkali land, the vegetation is scarce, the soil organic matter content is very low, the soil has poor aeration and is easy to harden. The improvement of saline-alkali land is not only to wash and discharge salt to reduce the salinity of the soil, but also to fertilize the saline-alkali soil. An important method of fertilizing saline-alkaline rice fields is to return rice straw to the field. However, due to the high salt content of saline-alkali land, especially after harvesting without water lamination, the soil is not conducive to the decomposition of rice straw. After rice transplanting in the next season, the temperature rises rapidly, and the straw decomposes to produce a large amount of reduced toxic and harmf...

AI Technical Summary

Problems solved by technology

An important method of fertilizing saline-alkali rice fields is to return rice straw to the field. However, due to the high salt content in saline-alkali land, especially after harvesting without water lamination of salt, returning salt to the soil is not conducive to the decomposition of rice straw.

After rice transplanting in the next season, the temperature rises rapidly, and the straw decomposes to produce a large amount of reduced toxic and harmful substances, which inhibits the growth of the seedling root system, resulting in blackened rice root system, dead seedlings, and low yield

[0003] Therefore, at present, the method of returning straw to the field is not used to increase soil organic matter in saline-alkali land.

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