Effects of Cropping Patterns of Different Flood-avoiding Plants on Greenhouse Gas Emission in the Downstream of Yangtze River

doi:10.11924/j.issn.1000-6850.casb15070015

Abstract

Abstract: In this study, the effect of cropping patterns of different flood-avoiding plants on greenhouse gas emission in the downstream of Yangtze River was studied and the basis for selecting regional low-carbon agriculture crop patterns was provided. The emission rules of CO₂, CH₄ and N₂O under the cropping patterns of wheat-rice (WRR), yellow heart cabbage-water bamboo (WZR), yellow heart cabbage-soybean-water chestnuts (WECR), cress-celery bud-rice (CCRR) and lotus root (LR) were analyzed by the method of closed chamber technique. The results showed that the emission of CO₂ followed the order of summer＞autumn＞spring＞winter, and CH₄ and N₂O followed the order of summer＞autumn; CO₂ emissions were not significantly different among the cropping patterns of WECR, WRR and CCRR, but were all higher than that of WZR and LR; N₂O emissions of WRR, CCRR and LR were significantly higher than that of WZR and WECR; CH₄ emission of LR was significantly higher than that of CCRR, but CH₄ emissions of WZR, WECR and WRR were significantly lower than that of LR and CCRR. The order of greenhouse effect was WRR＞CCRR＞WECR＞LR＞WZR, which suggested that the cropping pattern of yellow heart cabbage-water bamboo (WZR) had the lowest greenhouse effect and it was the better production pattern in the Yangtze River Flooding Area.

CLC Number:

S181

Qi Longchang,Li Youqiang,Che Zhao,Cao Gang,Wang Teng,Song He and Dong Zhaorong. Effects of Cropping Patterns of Different Flood-avoiding Plants on Greenhouse Gas Emission in the Downstream of Yangtze River[J]. Chinese Agricultural Science Bulletin, 2015, 31(36): 188-193.

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