Method for improving saline-alkali soil by utilizing residual rural waste

Abstract

The invention relates to a method for improving saline-alkali soil by utilizing residual rural waste, and belongs to the technical field of soil improvement. The saline-alkali soil is improved by utilizing materials such as residual straws in rural areas, branches, abandoned fungus bran and the like; the residual materials are crushed to obtain crushed materials; the crushed materials are mixed with the saline-alkali soil and loam soil in certain proportion to obtain a mixture; the mixture is laid in a to-be-planted area with a laying thickness determined according to a planting variety; and thoroughly-decomposed poultry manure and livestock manure are applied to the bottom of the mixture. According to the method, the fertility of the soil can be remarkably improved and the environment is cleaned while the structure of the saline-alkali soil is improved.

Description

Technical field: [0001] The invention belongs to the technical field of soil improvement, and particularly relates to a measure for improving the soil structure of saline-alkali land by using rural residues such as straw, branches, discarded fungus chaff and the like. Background technique: [0002] As a type of land resources, saline-alkali soil resources are widely distributed in the world and are also an important land resource. As the population grows, the area of ​​cultivated land decreases, and a large number of forests, grasslands, and wetlands are reclaimed as cultivated land for intensive management, which destroys the original vegetation and soil structure, and leads to aggravation of land salinization. These lands are becoming abandoned land, which has seriously restricted the development of local agriculture, animal husbandry and social economy, and the control of saline-alkali land has become a worldwide problem. There are also great differences in the improveme...

AI Technical Summary

Problems solved by technology

However, this method has complex manufacturing process and high cost, cannot improve the soil structure of saline-alkali land, and is not durable

[0005] The patent with publication number CN103288555A introduces a method of soil improvement, which is made of fermented animal manure, crop stalk ash powder, bexenix powder, and diammonia. This method can provide a large amount of organic matter and improve soil structure to improve the growth quality of plants in saline-alkali land, but this method newly adds banned bexenix powder and has little use of rural residues and low persistence

[0006] The patent with publication number CN102217438A introduces a saline-alkali land improvement method, which solves the technical problem that the pH value of the existing saline-alkali land soil is above 10 and is not suitable for plant growth, but this method needs to be repeated, has no persistence, and uses a single substance. no effect on soil structure

[0007] The patent with the publication number CN102077710A introduces a method of improving saline-alkali land by using bio-organic fertilizers. The method classifies domestic waste and uses kitchen waste, animal and plant residues, and sludge after wastewater treatment to be composted. , can significantly increase soil organic matter and mineral nutrients such as alkaline nitrogen, available phosphorus, available potassium, total nitrogen, total phosphorus and total potassium in saline-alkali land, but this method does not involve straw, branches, waste fungus chaff, poultry and livestock manure, etc. rural surplus