Studies on the Influences of Different Planting Patterns on the Emissions of Methane and Nitrous Oxide in the Paddy Field  

不同栽培模式对稻田甲烷和氧化亚氮排放的影响（英文）

作　　者：谭雪明[1] 黄山[1] 熊超[1] 石庆华[1] 潘晓华[1] 吴自明[1] 

机构地区：[1]作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室/江西农业大学,江西南昌330045

出　　处：《Agricultural Science & Technology》2015年第5期968-972,共5页农业科学与技术（英文版）

基　　金：Supported by National"Twelfth Five-Year Plan"of Scientific and Technological Support Plan(No.2011BAD16B04)~~

摘　　要：This paper monitors the differences of early rice yield and the emissions of methane and nitrous oxide in the paddy field, based on the different cultivation technologies（high-yield scattered-planting mode, transplanting mode, farmer-planting mode）. Results suggested that the rice yield by high-yield scattered-planting mode and transplanting mode was significantly higher than farmer-planting mode, and the increase reached 16.4% and 17.7%. The difference of high-yield scattered-planting mode and transplanting mode was insignificant. The potential contributions of the methane amount by these three patterns to the global contribution were all above90%. The emission of methane during the growth period by the high-yield scatteredplanting mode was dramatically lower than that by transplanting mode and farmerplanting mode, while the differences between the high-yield transplanting mode and the farmer mode were insignificant. The changes of global temperature increase and the emission of methane were the same. The greenhouse gas intensity of high-yield scattered-planting mode was the lowest, and the farmer-planting mode was the highest. Therefore, the scattered-planting with reasonable fertilizing method is the most essential way to realize high yield of rice and the reducing the greenhouse gas emission as well.在构建不同栽培技术模式(高产抛栽模式、高产移栽模式、农户模式)的基础上,监测了不同栽培模式下早稻产量及稻田甲烷和氧化亚氮排放的差异。结果表明:高产抛栽模式和高产移栽模式水稻产量均显著高于农户模式,增产幅度分别达到16.4%和17.7%,高产抛栽模式和高产移栽模式产量之间差异不显著。3种模式甲烷排放对全球增温潜势贡献均在90%以上。高产抛栽模式全生育期甲烷排放显著低于高产移栽模式和农户模式,而高产移栽模式和农户模式之间差异不显著,全球增温潜势变化趋势与甲烷排放相同。高产抛栽模式温室气体强度最低,农户模式最高,高产移栽模式居中。因此,在抛栽条件下,配以合理的肥料运筹是同步实现水稻高产和温室气体减排的重要技术途径。

关 键 词：Scattered-cultivation mode  Early rice YIELD METHANE Nitrous oxide 

分 类 号：S511[农业科学—作物学] S154.1