Acid reduction and humidity regulation method for red upland soilred-soil dryland

Abstract

The invention discloses an acid reduction and humidity regulation method for the red upland soilred-soil dryland. The red upland soilred-soil dryland is covered by straws. The acid reduction and humidity regulation method for the red upland soilred-soil dryland is characterized in that alkaline acid reduction and humidity regulation composite modifying agent is applied to the red upland soilred-soil dryland before the red upland soilred-soil dryland is covered by straws; the alkaline acid reduction and humidity regulation composite modifying agent is one of calcium peroxide and magnesium peroxide; and 5.8-8.0kg of alkaline acid reduction and humidity regulation composite modifying agent is applied to each unit of area. According to the acid reduction and humidity regulation method for the red upland soilred-soil dryland, the alkaline acid reduction and humidity regulation composite modifying agent reacts with water in soil so as to provide OH<->, neutralize parts of H<+>, generate alkaline inorganic matter and oxygen and release heat; in the slow oxygen releasing process, the soil acidity is lowered, the soil redox potential is changed, the water and air ratio of the soil is regulated, the acid reduction and humidity regulation effects isare simultaneously generated to the red upland soilred-soil dryland, and the acidity, the temperature and the moisture of the red upland soilred-soil dryland covered by the spring straw can be obviously improved so as to accelerate agricultural synergy and farmer income increment; and in addition, calcium or magnesium nutrition can be provided for the crop growth and development, thereby being favorable for improving the resource use ratio.

Description

technical field [0001] The invention relates to the improvement of red soil dry land, in particular to a method for reducing acidity and regulating humidity of red soil dry land. Background technique [0002] Affected by the formation of aluminum-rich soil, red soil dryland has four major obstacles: acidity, stickiness, plate, and thinness, which seriously restrict the development of land productivity. Rice straw mulching is one of the important measures to improve soil physical properties, effectively increase soil organic matter content, store more natural precipitation, reduce natural evaporation, and improve the fertility of cultivated land. However, under the influence of the monsoon climate, the soil temperature rises slowly and the soil humidity is high after the rice straw covers the hilly red soil in dry land in spring. Coupled with the obstacle factors of the red soil itself, the spring sown crops lack seedlings, rotten seedlings, weak seedlings, and serious ridgin...

AI Technical Summary

Problems solved by technology

The above soil acid and humidity control methods can only reduce the acid or adjust the humidity alone, but cannot reduce the acid and adjust the humidity at the same time, and there are problems of time-consuming, labor-intensive and high cost

In addition, in the red soil dry land covered with rice straw with a thickness of 2cm~3cm, the soil temperature in spring is 1.5°C~2.0°C lower than that of the non-covered rice straw cultivation method, the humidity is high (soil moisture content exceeds 30%), and the acidity is high (pH Value is 4.5~4.9), which seriously restricts the large-scale promotion of rice straw mulching cultivation method in red soil dry land