Method for improving saline-alkali soil texture through microbial straw fermentation

Abstract

The invention discloses a method for improving saline-alkali soil texture through microbial straw fermentation. The method comprises the following steps that 1, saline-alkali soil is excavated to establish microbial fermentation pit channels; 2, the pit channels are covered with straw and microbial flora; 3, saline-alkali 'removal' treatment and complete coverage of the saline-alkali soil are performed; 4, plant root systems are improved. By adopting the method for improving saline-alkali soil, the ecological environment of a mud flat can be improved, and the utilization rate of straw turnover is greatly improved.

Description

technical field [0001] The invention belongs to the field of soil quality improvement, and in particular relates to a method for improving saline-alkali soil quality by fermenting straw with microorganisms. Background technique [0002] Jiangsu is located in the middle of the coastal area of ​​mainland China and is an important part of the Yangtze River Delta region. Among them, the plain area is more than 70,000 square kilometers, accounting for more than 70% of the province's area. It is a typical impact plain of the estuary of a large river. At the same time, the Yangtze River brings a large amount of sediment into the Yellow Sea every year, forming a new alluvial plain. These alluvial plains have been soaked and weathered by salt water for a long time, and the soluble salts have been redistributed to form large areas of weathered saline-alkali soil along the coast. At present, there are 10.31 million mu of coastal tidal flats in Jiangsu, accounting for 1 / 4 of China's to...

AI Technical Summary

Problems solved by technology

[0004] There are four main methods for improving saline-alkali land: one is medicament improvement. For example, the application number is CN201210161872.7, and the patent application titled "a saline-alkali land improvement medicament and afforestation method for saline-alkali land improvement" discloses a The method of neutralizing the pH of the soil by spraying the mixed agent, and improving the saline-alkali soil quality, because the distribution of the saline-alkali soil in the saline-alkali land is not uniform, it is difficult to control the dosage of the drug by this method

The second is irrigation and salt drainage. For example, the patent application with the application number CN201310328902.3 discloses a salt drainage pipe installed to allow the water in the soil to fully flow through the leaching and melting of fresh water to allow the salt to pass through with the water. The method of discharging the salt discharge pipe, because the construction of the salt discharge pipe requires a lot of manpower and material resources, and the salt discharge pipe can easily cause the loss of soil fertility while washing away the salt and alkali, which is not conducive to the planting of large deep-rooted plants

However, deep plowing and deep plowing can only be applied to low-salinity soils covered by saline-alkali on the surface, and are not suitable for improvement of heavy-saline-alkali land