旱地春小麦产量对不同生育阶段温度变化的响应模拟

王钧,李广,闫丽娟,刘强,聂志刚

Simulation of Spring Wheat Yield Response to Temperature Changes of Different Growth Stages in Drylands

Jun WANG,Guang LI,LiJuan YAN,Qiang LIU,ZhiGang NIE

表1 “定西35号”小麦生长发育参数

Table 1 Growth parameters of wheat cultivar of “Dingxi 35”

参数名称Parameters name 参数值 Value 单位Unit 春化敏感因子Vernalization sensitivity 1.0 — 光周期敏感因子 Photoperiod sensitivity 2.0 — 单位茎秆干物质的籽粒数 Grains per gram stem 25.0 kernel·g-1·stem-1 潜在的籽粒灌浆速度Potential grain filling rate 0.001 g·grain-1·d-1 灌浆期到成熟期的积温Thermal time start filling to mature 580 ℃·d 最大灌浆速率Maximum grain filling rate 2.30 mg·grain-1·d-1 分蘖重Weight of tiller 1.22 g·tiller-1 单株重Weight of single plant 4 g 株高Stem length 1000 mm 最大谷粒重 Max grain size 0.045 g