摘要
豫西旱地大田条件下,对一次深翻、免耕覆盖、深松覆盖、传统耕作4种耕作方式冬小麦叶面积指数、旗叶光合特性、干物质积累与分配及小麦产量和水分利用效率进行试验分析。结果表明,在小麦生育后期,深松覆盖和免耕覆盖能有效延缓小麦旗叶叶绿素降解,维持较高的叶面积指数,改善旗叶光合性能,促进干物质积累,产量分别比传统耕作提高9.26%和10.22%,水分利用效率分别比传统耕作提高10.29%和15.57%。与传统耕作相比,深松覆盖灌浆中后期旗叶光合速率提高了5.48%,Fv/F0值提高了26.72%,Fv/Fm值提高4.88%,φPSⅡ值和1-qP/qN值与其它耕作方式相比差异不显著。
The effects of four different tillage systems including reduce tillage（RT）,no tillage（NT）,sub soiling tillage（ST） and conventional tillage（CK） on LAI,dry matter partitioning,photosynthesis characteristics,grain yield and WUE in winter wheat were determined.The results showed as following： after treating with ST and NT,the degradation of chlorophyll pigment can be restrain effectively,the LAI will stay at a high level,and the photosynthesis characteristics of flag leaf will be improved.Therefore,the dry matter partitioning in wheat will be promoted.After treating with ST,the grain yield and WUE will improve by 9.26% and 10.29%,and with NT these items will be 10.22% and 15.57% respectively.Compared with CT,the Pn,Fv/F0 and Fv/Fm of wheat flag leaf in the later grain-filling stage were increased by 5.48%,26.72%and 4.88% respectively.The significance of φP SⅡand 1-qP/qN with ST were not evident compared to other tillage treatments.
出处
《干旱地区农业研究》
CSCD
北大核心
2008年第5期17-21,共5页
Agricultural Research in the Arid Areas
基金
河南省科技攻关项目“旱地‘两高一节’耕作技术体系研究与应用”(0424060032)
科技部《国家粮食丰产科技工程》“河南小麦夏玉米两熟丰产高效技术集成研究与示范”(2004BA520A-06)
关键词
保护性耕作
光合作用
冬小麦
产量
水分利用效率
conversation tillage
photosynthesis function
winter wheat
grain yield
WUE
