Method for fixing carbon and reducing emission in south paddy fields in winter

Abstract

The invention discloses a method for fixing carbon and reducing emission in south paddy fields in winter. The method comprises steps of first, applying green fertilizer and planting in paddy fields in winter and re-applying green fertilizer in a broadcast sowing way before late rice harvest, second, covering the paddy fields via straws in winter, covering the straws on the paddy fields after paddy harvest rather than burning, third, conducting a moisture management mode smoothing water discharging, preventing waterlogging for the paddy fields in the whole winter via digging water discharging trenches, reducing methane emission via removing waterlogging environment, reducing emission via reducing substrate produced by greenhouse air, and fourth, turning over the paddy fields and restoring the green fertilizer and re-applying the same to the field, smashing the green fertilizer and harvesting before spring ploughing, conducting water-ploughing and turning the green fertilizer into the mud, restoring carbon and nitrogen nutrients fixed by the green fertilizer in winter into the paddy field soil in the above way, and maintaining long term effect of carbon fixation and emission reduction via addition of the soil carbon and nitrogen storage. The method is simple and convenient to operate, and enables the paddy fields in a fallow period to be effectively utilized; and beneficial effects of carbon fixation and emission reduction in winter can be achieved.

Description

technical field [0001] The invention belongs to the technical field of carbon sequestration and emission reduction during the paddy field fallow period, and more specifically relates to a method for efficiently utilizing organic resources in paddy fields to reduce non-point source pollution and greenhouse gas emissions. Background technique [0002] Paddy soil is a greenhouse gas (CO 2 、CH 4 , N 2 O) one of the important sources. my country is the second largest rice-growing country in the world. The rice planting area accounts for 27% of the world's planting area. Because of its special water management mode and fertilization characteristics, my country's rice field greenhouse gas emissions have received widespread attention. How to reduce and control the greenhouse Extensive research has been done on gas emissions and their mechanisms of action in the fields of environment, ecology, and global climate change. At present, the relevant research on greenhouse gas emissions...

AI Technical Summary

Problems solved by technology

This method can solve the problem of difficult use of rice fields in winter in southern China (the key is the problem of insufficient labor input), and has achieved the positive effect of carbon sequestration and emission reduction in rice fields in winter very effectively.

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