Methane Emission among Rice Ecotypes in Korean Paddy Soil
Methane Emission among Rice Ecotypes in Korean Paddy Soil
复制标题
韩国稻田土壤水稻生态型的甲烷排放
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
Yong
中科院分区：
文献类型：
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作者：
Kyeong;Deog;Sang;Jong;Yong
本研究以全北系水稻土为研究对象，探讨不同生态类型水稻甲烷排放特性。水稻品种包括早熟短粒品种三川边、中熟品种华盛边和晚熟品种东津边。甲烷通量的季节变化以抽穗期至抽穗期为最高。结果表明，早熟品种的甲烷通量有低于中晚熟品种的趋势。不施稻草的小区甲烷排放量比施稻草的小区减少了46%。水稻茎甲烷排放速率与温度波动高度相关。不同生态类型水稻秸秆还田的甲烷排放量分别为：早熟品种（三川边）0.394 g，中熟品种（华成边）0.407 g，晚熟品种（东津边）0.411 g。
This study was conducted to investigate methane emission among rice ecotypes in paddy soil (Jeonbug series). The varieties of rice involved early maturing short-grain variety, Samcheonbyeo, middle maturing variety, Hawsungbyeo and late maturing variety, Dongjinbyeo. The seasonal change of methane flux was high from ear formation stage to heading stage. It was found that the methane flux was tended to be lower in early maturing variety than in the mid-to-late maturing variety. The plots without rice straw reduced methane emission as much as 46% relative to rice straw application. The methane emission rate through rice stem was highly correlated with temperature fluctuation. Methane emission on ecotypes by rice straw application was 0.394 g in early maturing variety (Samcheonbyeo), 0.407 g in mid maturing variety(Hawsungbyeo), 0.411 g in late maturing variety(Dongjinbyeo).