施肥对油菜田土壤CO_2排放的影响  

Effects of Fertilization on Emission of Soil CO_2 Gas in Rape Field

作　　者：程志庆[1] 严平[1] 戴佳伟[1] 韩辉邦[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230036

出　　处：《中国农学通报》2011年第3期467-470,共4页Chinese Agricultural Science Bulletin

基　　金：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：为了评价不同施肥方式对油菜田温室气体CO2排放影响,从而更好地引导农民改善施肥方式,减少温室气体排放。本研究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-气相色谱法测定油菜生长期间的CO2的排放通量,同时对土温、土壤含水量和空气湿度进行测定。通过对数据进行相关性分析,结果表明:不同的施肥处理对CO2的排放有较大影响,其中CK处理的CO2排放通量最小;不同施肥方式对CO2的排放有影响,但差异不显著。10cm以下深度的土壤温度对进行JG的油菜的CO2排放有极显著正相关关系。土壤含水量对温室气体CO2的影响只有与秸秆施肥(JG)的处理呈显著负相关性。并认为在这4种处理中YH施肥是最值得推广的施肥方式。In order to evaluate the different fertilization on CO2 greenhouse gas emissions of rape fields,to better guide the farmers to improve fertilization methods to reduce greenhouse gas emissions.The study were 4 types of the fertilizations（YH,JG,CG,CK）in Chaohu rape fields,using the static box-GC determination of the growth of rape period of CO2 emission fluxes,while soil temperature,soil moisture and air humidity were determined,correlation analysis of data obtained different fertilizations treatments had great effects on CO2 emissions.CO2 emission flux of CK treatment was the smallest,but the effect of different fertilizations was not correlation.In soil temperature of 10 cm depth the following conduct straw fertilization on the CO2 emissions of rape there was a significant positive correlation.In the effect of CO2 emissions on soil moisture only JG treatment showed a significant negative correlation.And in 4 types of the fertilizations,YH was the most worthy of promotion.

关 键 词：不同施肥 油菜田 CO2通量 

分 类 号：S3[农业科学—农艺学]