未来气象条件下旱地春小麦产量及生物量对施氮量和播期变化的响应模拟

王志刚, 刘强, 王谨, 巩敬锦, 姚群英

Simulation of Response of Spring Wheat Yield and Biomass to Nitrogen Application Rate and Sowing Date in Dryland under Future Meteorological Conditions

Wang Zhigang, Liu Qiang, Wang Jin, Gong Jingjin, Yao Qunying

表3 RCP4.5与RCP8.5未来气候情景下春小麦产量及生物量与播期和施氮量之间的二次回归方程

Table 3 Quadratic regression equations for spring wheat yield and biomass in relation to sowing date and nitrogen application rate under RCP4.5 and RCP8.5 climate scenarios

气候模式Climatic model 方程Equation 相关系数Correlation coefficient RCP4.5 Y产量=1355.23+182.20X1+74.96X2-0.36X12-0.15X22-0.29X1X2 0.96 Y生物量=3752.86+255.17X1+95.56X2-0.41X12-0.17X22-0.38X1X2 0.94 RCP8.5 Y产量=1429.16+177.08X1+69.41X2-0.29X12-0.13X22-0.30X1X2 0.98 Y生物量=3716.45+254.87X1+93.46X2-0.44X12-0.17X22-0.41X1X2 0.93