%0 Journal Article
%T Effects of straw mulching on CO2 flux in wintry fallow paddy field<br>稻草覆盖对冬闲稻田二氧化碳通量的影响
%A YIN Chun-mei
%A XIE Xiao-li
%A WANG Kai-rong
%A <br>尹春梅
%A 谢小立
%A 王凯荣
%J 应用生态学报
%D 2008
%I 
%X This paper studied the effects of straw mulching on the CO2 flux in a wintry fallow paddy field at Taoyuan Agro-ecological Station, Chinese Academy of Sciences. The results showed that the effects of straw mulching mainly exerted in two ways. First, it positively affected soil temperature, making the CO2 flux increased obviously. Straw mulching gave a net emission of 2.68 g CO2 x m(-2) x d(-1), while no mulching gave a net fixation of 1.99 g CO2 x m(-2) x d(-1), the difference between them being very significant (P < 0.01). Second, straw mulching decreased the biomass of weeds and the photosynthetically active radiation they absorbed, which in turn resulted in an increase of CO2 flux. Under straw mulching, the water content in surface soil layer (0-15 cm) increased by 9% or more, but no significant change was observed in CO2 flux.
%K straw mulch
%K wintry fallow paddy field
%K CO2 flux<br>稻草覆盖
%K 冬闲稻田
%K CO2通量
%K 稻草覆盖
%K 稻田
%K 二氧化碳通量
%K 影响
%K paddy
%K field
%K flux
%K straw
%K mulching
%K 变化
%K 水量比
%K 土壤表层
%K 吸收的光合有效辐射
%K 生物量
%K 水平
%K 两者差异
%K 覆盖处理
%K 排放量
%K 试验
%K 正效应
%K 土壤温度
%K 结果
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=D8B77FDE3F432EBF6146A94E49A83B2B&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=EDA22B444205D04A&eid=EFD65B51496FB200&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=25