温室番茄植株养分和光合对水肥耦合的响应及其与产量关系

王虎兵,曹红霞,郝舒雪,潘小燕

Responses of Plant Nutrient and Photosynthesis in Greenhouse Tomato to Water-Fertilizer Coupling and Their Relationship with Yield

WANG HuBing,CAO HongXia,HAO ShuXue,PAN XiaoYan

表7 温室番茄叶绿素含量和净光合速率与叶片养分含量的回归关系

Table 7 Regression relationship of chlorophyll content and net photosynthetic with leaf nutrient content of greenhouse tomato

指标 Index 定植后天数 Days after transplanting (d) 回归方程 Regression equation 决定系数 Determination coefficient (R2) 显著性 Significance (P) 叶绿素含量 Chl 52d Y1=-0.843+0.0453XN-0.142XP+0.058XK 0.973 <0.001 65d Y1=-0.489-0.017XN+0.401XP+0.025XK 0.730 0.038 90d Y1=-0.270+0.049XN+0.024XP+0.034XK 0.906 0.002 118d Y1=1.502+0.011XN-0.026XP+0.029XK 0.867 0.005 净光合速率 Pn 52d Y2=-25.158+0.361XN-0.645XP+1.124XK 0.839 0.009 65d Y2=-31.593-0.056XN+4.446XP+0.921XK 0.727 0.039 90d Y2=-15.121+0.832XN+1.452XP-0.158XK 0.927 0.001 118d Y2=-3.789+0.537XN-3.864XP+0.887XK 0.867 0.005