Cultivation method loess plateau dry farmland soil carbon sink

Abstract

Provided is a cultivation method loess plateau dry farmland soil carbon sink. The method uses coverage in a fallow period, and comprises cutting straws into 5-10 cm sections, and uniformly covering the straws on a farmland, wherein land is covered completely and seedlings are not pressed are as the criterion of dosage of farmland coverage straws, and in the coming year, a no-tillage planter is directly used to perform field sowing and fertilization operation. The method has effects of reducing temperature of soil and maintaining moisture of soil, and obviously increases greenhouse gas emission reduction proportion of dry farmland in loess plateau areas, and maintains stability of yield. The method effectively solves a problem of s greenhouse gas emission of dry farmland soil in loess plateau areas.

Description

technical field [0001] The invention relates to a farming method for soil carbon sinks, in particular to a farming method for soil carbon sinks in dry farming fields on the Loess Plateau. Background technique [0002] The arid and semi-arid hilly and gully region of the Loess Plateau is the region with the most serious soil erosion in my country and even in the world. For a long time, soil erosion has not only become the main problem that plagued the sustainable development of the region and farmers' poverty alleviation, but also brought a series of ecological and environmental problems to the lower Yellow River region, for example, the large amount of soil greenhouse gas emissions, and the surface temperature and Soil water content has a large impact on soil GHG emissions. Among them, one of the main causes of soil greenhouse gas emissions in this area is the unreasonable farming methods of dry farmland. Studies have shown that soil CO 2 , N 2 The emission fluxes of O a...

AI Technical Summary

Problems solved by technology

Traditional farming requires the soil to be finely divided and leveled, and it must be plowed and harrowed several times. Soil erosion; traditional farming often destroys the soil structure. Except for the growing period of crops, the surface of the cultivated land is exposed for a long time without organic matter coverage or green plant coverage. The use efficiency is low, and the loose and bare topsoil is also prone to water erosion

In addition, a large amount of straw and livestock dung are used as fuel in traditional agriculture. Not only can the organic matter not be returned to the farmland to participate in the material cycle, but the emission of greenhouse gases is serious and it is easy to cause air pollution.

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