Method for improving pH value of acid soil through biomass ash

Abstract

The invention discloses a method for improving the pH value of acid soil through biomass ash. A piece of vegetable land with high acidity and the slope smaller than 10 degrees is chosen, and eight hundred kilograms of organic fertilizer is applied to per mu of land before crop sowing to serve as base fertilizer; six hundred kilograms of biomass ash is evenly applied to per mu of land two days later, and ploughing is carried out on the soil with the ploughing depth of 20 cm; the water content of the soil is kept not smaller than 45% for seven or more days, and then crops can be planted. The method is easy and convenient to implement, raw materials are easy to get, cost is low, the pH value of the acid soil can be increased to be suitable for crop growth within a short period of time which is mainly embodied by the Al3+ content and the H+ content for reducing soil interchangeability, the pH value of ploughed soil is increased, the pH value of the soil of the whole ploughed layer is increased to 6.0-6.5 from 4.5 and is suitable for crop growth, and the crop yield can be improved.

Description

technical field [0001] The invention relates to the technical field of soil restoration, in particular to a method for increasing the pH value of acidic soil by using biomass ash. Background technique [0002] Soil acidification is a very slow natural process, which is a process in which the increase of hydrogen ions in the soil causes the decrease of soil pH value and the decrease of base saturation. But in recent decades, human activities have greatly accelerated the process of soil acidification. Soil acidification is one of the main problems of my country's farmland ecosystem. It can directly deteriorate the physical and chemical properties of cultivated land soil, break the original soil ecological environment conditions suitable for crop growth, make crop growth and development poor, and eventually lead to crop yield and quality decline. . According to a report by Science in 2010, the soil pH of commercial crops in southern China has decreased by 0.3 units since the 1...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used method of improving acidic soil is to apply lime, but long-term or large-scale use of lime will cause soil compaction, and also cause imbalance of calcium, magnesium, potassium and other elements in the soil, resulting in crop yield reduction

In addition to applying lime, the traditional methods of improving acidified farmland soil include zeolite, fly ash, plant ash and manure, which are not only time-consuming and labor-intensive, but also costly

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