覆膜对不同施肥条件下玉米拔节期光合参数与荧光参数的影响  

Effect of plastic film mulching on photosynthetic and fluorescence characteristics of corn leaf under different fertilization schemes at jointing stage

作　　者：李万峰[1,2] 李兆君[2] 梁永超[2,3] 解晓瑜[1,2] 魏学智[1] 杨佳佳[1,2] 

机构地区：[1]山西师范大学生命科学院,临汾041004 [2]农业部作物营养与施肥重点实验室中国农业科学院农业资源与农业区划研究所,北京100081 [3]石河子大学农学院新疆生产建设兵团绿洲生态农业重点实验室,石河子832003

出　　处：《中国生态农业学报》2009年第6期1086-1089,共4页Chinese Journal of Eco-Agriculture

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB109305);云南省科技创新强省计划(2007AD003)资助

摘　　要：为探明覆膜对早春东北黑土玉米叶片光合生理特征的影响,在大田条件下,研究了覆膜对不同施肥条件下玉米拔节期叶片光合参数与叶绿素荧光参数的影响。结果表明:覆膜能够显著增加不同施肥条件下玉米拔节期叶片光合速率、蒸腾速率、气孔导度和水分利用率,而对其他光合参数如细胞间隙CO2浓度和气孔限制值影响不显著。就施肥条件而言,覆膜对N、P处理玉米拔节期叶片光合参数的影响明显强于其他施肥处理。覆膜能够增加施P和PK处理玉米拔节期叶片Fm、Fv/Fm和Fv/Fo值,而显著降低了施NPK处理玉米拔节期叶片相应的荧光参数,覆膜对其他施肥处理玉米拔节期叶片叶绿素荧光参数的影响不显著。Plastic film mulching （PFM） and different fertilization schemes were conducted in corn fields in the black soil region of Northeast China at jointing stage and the effect on the physiological characteristics of photosynthesis and chlorophyll analyzed. The results reveal the following： PFM significantly increases photosynthetic rate （Pn）, transpiration rate （Tr）, stomatal conductance （Gs） and water use efficiency （WUE）. It has no effect on intercellular CO2 concentration （Ci） and stomatal limitation （Ls）. PFM has a stronger effect on photosynthetic parameters of corn treated with only nitrogen or phosphorus than those treated with other fertilizer types. PFM significantly increases Fm value, Fv/Fm and Fv/Fo ratios of corn treated with P and PK fertilizer. However, PFM significantly decreases Fm value, and Fv/Fm and Fv/Fo ratios of corn treated with NPK fertilizers.

关 键 词：玉米 施肥 覆膜 光合参数 叶绿素荧光参数 

分 类 号：S318[农业科学—作物栽培与耕作技术]