River bank channel sandy soil improvement method and application

Abstract

The invention belongs to the technical field of soil improvement, and discloses a river bank sandy soil improvement method and application, and the method comprises the following steps: respectively applying 1 kg / m < 2 >, 5 kg / m < 2 >, 10 kg / m < 2 > and 15 kg / m < 2 > of pyrohydrolysis digestion sludge on sandy river beach land; the sludge and the soil are fully mixed in a broadcast application and ploughing combined mode; shrubs and shrub grass are planted, and a water-retaining agent is applied to the shrubs. After the sludge is broadcast and ploughed, the water content of the soil can be effectively improved, the water binding capacity of the soil is enhanced, and meanwhile, the slow seepage effect on the soil is achieved. The stability of soil aggregates is improved, the contents of organic matters, total nitrogen, total phosphorus, quick-acting potassium and the like are all improved, the soil fertility is improved, and meanwhile, the generated runoff water does not pollute the surrounding environment. The sludge improvement is beneficial to improving the microbial diversity of the soil.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a method and application for improving sandy soil of a river bank. Background technique [0002] At present, sandy soil refers to clay soil whose content of sand grain group is greater than that of silt grain group. This type of soil generally refers to a type of soil similar to sandy soil, with a physical clay content of 15%. It is mainly distributed in the piedmont plains of Xinjiang, Gansu, Ningxia, Inner Mongolia, and Qinghai, as well as the banks of rivers and coastal plains in Northwest my country. the area. Although the sand content is high, the particles are coarse, the specific surface area is small, the number of intergranular large pores is large, the soil has good air and water permeability, and the drainage in the soil is smooth, and it is not easy to produce waterlogging, waterlogging and upper stagnant water. However, the storage property is p...

AI Technical Summary

Problems solved by technology

[0004] The prior art (Summary of Foreign Sludge Land Utilization Research Progress_Xiong Jun) discloses a method of using sludge to improve soil. However, this method has many manual processes, time-consuming and labor-intensive, and the cost of raw materials is high.

Artificial addition of chemical compound fertilizers can easily lead to non-point source pollution and affect river habitats

[0005] Through the above analysis, the problems and defects of the existing technology are: the existing sandy soil improvement method has many procedures, is time-consuming and labor-intensive, the cost of raw materials is high, and the addition of chemical compound fertilizers is likely to cause non-point source pollution and affect the river environment.

[0006] The difficulty in solving the above problems and defects is: although the addition of chemical compound fertilizers will temporarily change the site conditions of the riparian zone, it will lead to eutrophication of the water body and affect the ecological environment of the river, which is not conducive to environmental friendliness and sustainable development.

Images