Improvement method for acid red soil in dry land, improved red soil and application of improved red soil

Abstract

The invention discloses an improvement method for acid red soil in dry land, improved red soil and application of the improved red soil. The improvement method comprises the following steps that mud cakes obtained after river sediments are subjected to dehydration treatment are mixed with biomass charcoal, and then the obtained mixture is applied to the acid red soil; and the acid red soil is subjected to manual or mechanical ploughing, so evenly-mixed mixed soil is obtained. Alternatively, the method comprises the following steps: respectively applying the mud cakes obtained by dehydrating the river sediments and the biomass charcoal to the acid red soil; and manually or mechanically ploughing the acid red soil so as to obtain the mixed soil which is evenly mixed. According to the improvement method, recyclable components in solid waste are utilized; the improvement method is friendly to environment, simple in process, low in cost and suitable for large-area application; the contents of total nitrogen and available phosphorus in the acid red soil of dry land can be increased; the pH value of the soil is increased; the physicochemical property of the dry land acid red soil and the growth condition of crops are effectively improved; and the improved red soil has a growth promoting effect on various crops.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a method for improving dryland acidic red soil, improved red soil and applications thereof. Background technique [0002] Dry red soil is an important land resource in southern my country, accounting for about 22.7% of the country's land area, and is an important base for agricultural development and economic development. However, due to long-term unreasonable development and utilization, a large area of ​​natural vegetation has been destroyed, and the development of forestry and fruit industry, breeding and aquaculture has been greatly restricted. Water and soil erosion has intensified, soil quality has degraded, and seasonal droughts are frequent, eventually causing ecosystem degradation. affect the sustainable development of agriculture. Therefore, the development and integration of dryland red soil acidification prevention and control, fertility and ecological funct...

AI Technical Summary

Problems solved by technology

Acidification will lead to the lack of nutrient elements in the soil, such as P, Mo, Ca, and Mg, and cause poisonous damage to plants. The supply of nutrients in the soil is out of balance, which seriously affects the physical and chemical properties, resulting in the soil becoming more and more dependent on chemical fertilizers. , and will also seriously hinder the growth of crops

(2) The fertility level of dryland red soil is generally low

Traditional disposal methods not only occupy a large area, are prone to secondary pollution, but also result in a waste of resources for a large number of available components in the sediment (such as nitrogen, phosphorus, nutrients, organic matter, mineral components, trace elements, etc.)

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