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2 “定西35号”作物参数

Table 2 Growth parameters of Dingxi 35

参数Parameter 值Value 株高Plant height (mm) 1000 春化敏感因子Vernalization sensitivity 1.0 从灌浆期至成熟期积温 Thermal time from filling to mature (℃) 580 最大谷粒质量Maximum grain size (g) 0.045 最大灌浆速率Maximum grain filling rate (mg/d) 2.30 分蘖质量Weight of tiller (g) 1.22 每茎秆籽粒数Grains per stem 25.0 光周期敏感因子Photoperiod sensitivity 2.0