不同降水年型下春小麦产量对降水、施氮及秸秆覆盖的响应模拟

叶晓娟, 刘强

Simulation of Spring Wheat Yield Response to Precipitation, Nitrogen Application, and Straw Mulching under Different Precipitation Year Types

Ye Xiaojuan, Liu Qiang

表1 小麦品种“定西35号”作物参数

Table 1 Wheat variety parameters of Dingxi 35

参数 Parameter 数值 Value 春化敏感因子Vernalization sensitivity factors 1.0 光周期敏感因子Photoperiod sensitivity factors 2.0 单位茎秆干物质的籽粒数 Grains per stem dry matter unit (grain/g) 25.0 潜在的籽粒灌浆速度Potential grain filling rate (g/d·grain) 0.001 灌浆期到成熟期的积温 Thermal time from filling to maturity (℃·d) 580 最大灌浆速率Maximum grain filling rate (mg/d·grain) 2.30 分蘖重Weight of tillers (g/tiller) 1.22 株高Plant height (mm) 1000 最大谷粒重Maximum grain weight (g) 0.045