应用生态学报2018，Vol.29Issue(4)：1233-1239,7.DOI:10.13287/j.1001-9332.201804.030
灌水模式对冬小麦光合特性、水分利用效率和产量的影响
Effects of irrigation regimes on photosynthesis, water use efficiency and grain yield in winter wheat
摘要
Abstract
The effects of different irrigation regimes on photosynthesis,plant growth,water use efficiency (WUE),and grain yield in winter wheat were examined in a common garden with rainout shelter during 2013-2014 and 2014-2015 growing seasons.The experiment consisted of two irrigation timings,jointing stage (J) and anthesis (F),and three irrigation levels,O,37.5 and 75 mm,which generated nine irrigation combinations,i.e.J0F0,J0F1,J0F2,J1F0,J1F1,J1F2,J2F0,J2F1 and J2F2.All plots received 75 mm irrigation at grain filling stage.The results showed that water stress at jointing stage significantly reduced leaf area after jointing stage and the net photosynthetic rate (Pn) at anthesis.Post-anthesis flag leaf Pn was significantly affected by irrigation at anthesis.Water stress at jointing stage followed irrigation at anthesis or that at anthesis followed irrigation at grain filling stage increased dry matter accumulation of wheat plants.Higher amount of irrigation at jointing stage led to higher water consumption in the entire growing period.High amount of irrigation during the entire growing period resulted in high water consumption and grain yield with an exception of J1F2 treatment.Among all the treatments,the J1F2 treatment had superior grain yield and WUE.Sufficient water supply at anthesis resulted in high flag leaf Pn after flowering in J1F2.Irrigation at anthesis for J1 F2 enhanced wheat dry matter accumulation and kernel numbers per spike,and consequently high yield.Small amount of irrigation at jointing stage reduced wheat water consumption at middle and late growth stages.The wheat WUE in treatments with small amount of irrigation at jointing stage (J1F2) was higher than in other treatments.In this study,J1F2 was the best irrigation regime for winter wheat.关键词
小麦/灌水模式/生育中期/光合/耗水量/产量Key words
wheat/irrigation regime/middle growth stage/photosynthesis/water consumption/grain yield引用本文复制引用
马富举,杨程,张德奇,岳俊芹,王汉芳,邵运辉,方保停,李向东..灌水模式对冬小麦光合特性、水分利用效率和产量的影响[J].应用生态学报,2018,29(4):1233-1239,7.基金项目
本文由“十三五”国家重点研发计划项目(2017YFD0301102,2016YFD0300404)、“十二五”国家科技计划项目(2013BAD07B07-3)和河南省农业科学院自主创新专项基金资助 （2017YFD0301102,2016YFD0300404）
This work was supported by the National Key Research and Development Program of the Thirteenth Five-Year Plan (2017YFD0301102,2016YFD0300404),the National Key Science and Technology Plan of the twelfth Five-Year Plan(2013BAD07B07-3) and the Special Fund for Independent Innovation of Henan Academy of Agricultural Sciences. （2017YFD0301102,2016YFD0300404）
