施肥对油菜主要生长期CH_4排放的影响  

Effects of Fertilization on Emission of CH_4 in Whole Rape Growth Period

作　　者：陈琛[1] 严平[1] 韩辉邦[1] 戴佳伟[1] 杨书运[1] 马友华[1] 

机构地区：[1]安徽农业大学资源与环境学院,合肥230031

出　　处：《中国农学通报》2011年第15期121-124,共4页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划项目"沿巢湖地区农田养分污染减控与面源污染防控研究与示范"(2007BAD87B06)

摘　　要：以巢湖油菜田优化施肥(YH)、秸秆施肥(JG)、习惯性施肥(CG)和不施肥(CK)4种施肥类型为研究对象,利用静态箱-气相色谱法测定了油菜生长期间的CH4的排放通量,同时对土温、土壤含水量和空气湿度进行测定,得出油菜田温室气体CH4的排放通量有明显的时间变化特征。与CK相比,YH、CG、JG3种施肥类型下CH4的排放分别增加了21.50%、27.33%、29.87%。通过对数据进行相关性分析,实验期间CH4的排放通量从整体上与10cm以下温度正相关、YH处理的土壤含水率与CH4通量在0.05水平显著正相关。4 types of the fertilizations （YH,JG,CG,CK） in Chaohu rape fields were used as samples,CH4 emission fluxes in the rape growth period were detected by using the static box-GC determination,and the soil temperature,soil moisture and air humidity were determined.The results showed that CH4 emission fluxes had obvious time variation characteristics.The amounts of emission of CH4 within YH,CG and JG increased by 21.50%,27.33%,29.87% respectively,compared with that of CK.Through correlation analysis of data,the results showed that CH4 emission fluxes were positive correlation with soil temperature of 10 cm depth.Soil moisture and CH4 flux was significantly positively correlated in 0.05 level.

关 键 词：油菜田 施肥 CH4通量 抽薹期 开花期 荚果期 

分 类 号：S3[农业科学—农艺学]