土壤与环境2001，Vol.10Issue(1)：27-29,3.
稻田土壤理化特性对CH4排放的影响
Influence of paddy soil properties on CH4 emissions
摘要
Abstract
Under the flooded and saturated conditions, eight paddy soil samples were incubated at 25 ℃ for 20 days to identify the key parameters influencing methane emission in terms of soil properties. Two treatments of no organic matter input and with additional winter wheat straw input were set up for each water regime. Correlation analysis indicated that CH4 emission rate is positively related to soil sand content for all cases（p<0.01）. Results from a stepwise regression analysis suggested that CH4 emission could be quantitatively described by a linear combination of soil sand content and the ratio of soil C/N under the flooded condition. Values of the determination coefficient (R 2) are 0.991*** and 0.985*** for the control and with additional winter wheat straw input, respectively. Under the saturated condition, CH4 emission from the control could be also quantitatively described by a linear combination of these two soil parameters （R 2=0.898**）, while that from the treatment of wheat straw input was only found to be positively correlated with the soil sand content（R 2=0.776**）关键词
稻田/土壤理化性状/CH4排放分类
资源环境引用本文复制引用
蒋静艳,黄耀,宗良纲..稻田土壤理化特性对CH4排放的影响[J].土壤与环境,2001,10(1):27-29,3.
