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《China Rice》 2016-02
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Study on Methane Emissions in Paddy Soil under Covered Film Drip Irrigation

ZHANG Yu;HUANG Kai;LI Xiao;FANG Xiuqin;DU Xinglin;College of Plant Science, Jilin University;Rice Research Institute, Jilin Academy of Agriculture Science;  
To reveal CH_4 emissions in rice fields under covered film drip irrigation, the comparative method was used to study the methane emission of rice paddy with drip irrigation under mulch film. Experiments were divided into three treatments: drip I, drip II and flooding. The local high-yielding cultivars Jihan 1 was used to analysis the methane emissions from rice paddy. The results showed that methane emission flux from rice fields under covered film drip irrigation was less than flooded conditions; methane emis-sion flux in drip Ⅰ was higher than that of drip Ⅱ, which indicated that the soil moisture content is one of the major factors which affect CH_4emission; methane emissions trend under three conditions were roughly the same, and the emission peaks were in mid tillering stage and jointing booting stage, which indicated that the process of CH_4 emission from paddy field under film drip irrigation was not changed.
【Fund】: 吉林省重点科研项目“水稻特异种质资源创制与高产、优质、多抗新品种选育研究”(20150204005NY)
【CateGory Index】: S511
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