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

A carbon emission reduction and paddy field technology, applied in land preparation methods, agricultural gas emission reduction, agricultural machinery and equipment, etc., can solve the problems of insufficient labor input and difficult utilization of rice fields in winter, and achieve the consolidation of green manure, carbon sequestration, emission reduction, and smooth drainage. , the effect of promoting absorption and fixation

Inactive Publication Date: 2015-11-11
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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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 lab

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

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Embodiment 1

[0023] according to figure 1 It can be seen that a method for carbon sequestration and emission reduction in paddy fields in the south in winter, the steps are:

[0024] 1. Green manure planting. This example is carried out in the Taoyuan Agricultural Ecological Experimental Station of the Chinese Academy of Sciences for long-term positioning experiments in rice fields, and milk vetch is selected as a plant for carbon sequestration and emission reduction for green manure. About 15-20 days before the harvest of late rice, vetch is sown by sowing, and the seeding rate is 22.5-30.0kg / hm 2 .

[0025] 2. Straw mulching and returning to the field. After the late rice is harvested, the full amount of late rice straw is returned to the field in situ. When returning to the field, the straw is dispersed and thinned to form a uniform covering layer on the field surface.

[0026] 3. Water management mode with smooth drainage. Drainage ditches are opened in the field to keep the drain...

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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...

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Application Information

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IPC IPC(8): A01B79/02
CPCY02P60/20Y02P60/22
Inventor 陈安磊陈春兰王卫涂成谢小立魏文学
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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