Soil improvement method

Abstract

The invention relates to the technical field of soil improvement, in particular to a soil improvement method. According to the method, an organic material with a reasonable proportion is prepared, a microbial agent capable of accelerating the fermentation speed is added, the soil is irrigated until the maximum field water holding capacity reaches 80%, then the soil is covered with a film, one timeof watering is carried out at the periphery of the film at the 5 day and the 10 day separately after film application, so that a gap between the edge of the periphery of the film and the soilis sealed by water, and the problems of conventional RSD treatment at a lower temperature can be solved that the treatment time is long and needs 5-8 weeks, and the treated soil easily has nitrogen deficiency and maintains an anaerobic environment difficultly. After the soil improvement method is used, the pH value of the soil is increased, the unit weight of the soil is decreased, the soil porosity is improved, the content of various nutritional ingredients is obviously increased, the improvement effect of the method is better than that of the conventional RSD treatment, the treatment time is short, and the soil improvement can be completed in only 14-26 days.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil improvement method. Background technique [0002] Strongly reducing soil sterilization (RSD) has been proven to be an efficient and environmentally friendly method to reduce the number of soil pathogenic fungi and nematodes and remediate degraded soils. The RSD method is different from the flooding method and the method of applying organic fertilizer. It is a soil treatment method before planting crops: (1) The purpose of applying a large amount of organic materials is not to provide nutrients for crops, but to create a strong restoring soil environment and Produces substances that are toxic and harmful to soil-borne pathogens. These toxic substances are completely decomposed before the end of the treatment, and will not cause toxicity to the growth of the treated crops; (2) waterlogging or film covering prevents air from entering, so as to facilitate the formati...

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Problems solved by technology

However, through practical application in production, it can be seen that when the treatment temperature is low, the organic materials in the soil cannot be fermented quickly, which directly affects the supply of organic nutrients and the formation of an anaerobic environment, resulting in a long time for RSD treatment, which takes 5-8 weeks , and most of the organic materials currently used in RSD treatment are straws, which are not easy to ferment, and the treated soil is also prone to nitrogen deficiency. Many cultivated lands are not suitable for flooding treatment, and the entire process of RSD cannot be maintained only by mulching. anaerobic environment

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