水氮耦合及种植密度对绿洲灌区玉米光合作用和 干物质积累特征的调控效应

魏廷邦,柴强,王伟民,王军强

Effects of Coupling of Irrigation and Nitrogen Application as well as Planting Density on Photosynthesis and Dry Matter Accumulation Characteristics of Maize in Oasis Irrigated Areas

WEI TingBang,CHAI Qiang,WANG WeiMin,WANG JunQiang

表4 水氮耦合条件下不同密度玉米主要指标间的相关分析

Table 4 The correlation analysis of maize with different density under coupling of irrigation and nitrogen application

指标 Item 光合速率 Pn 干物质积累量 Dry matter accumulation 干物质积累最大增长速率 Maximum increase rate 水分利用效率 WUE 籽粒产量 Grain yield 光合速率Pn 1 -0.5 0.647** 0.919** 0.855** 干物质积累量 Dry matter accumulation 1 -0.2208 -0.259 0.178* 干物质积累最大增长速率 Maximum increase rate 1 0.641** 0.669** 水分利用效率WUE 1 0.898** 籽粒产量Grain yield Grain Yield 1