全球气候变暖对中国种植制度可能影响ⅩⅢ. 东北三省春玉米熟型调整的降水限制及其对产量的可能影响

李娥,赵锦,叶清,高继卿,杨晓光

The Possible Effects of Global Warming on Cropping Systems in China ⅫⅠ. Precipitation Limitation on Adjusting Maturity Cultivars of Spring Maize and Its Possible Influence on Yield in Three Provinces of Northeastern China

LI E,ZHAO Jin,YE Qing,GAO JiQing,YANG XiaoGuang

表2 不同生育时期的划分及作物系数

Table 2 Division of different growth periods and crop coefficient

Kc 前期 Early stage 中期 Middle stage 后期 Late stage 0.3 1.15 0.6 生育阶段 Growth period 播种—拔节 Sowing-jointing 拔节—开花（吐丝） Jointing-flowering (spinning) 开花（吐丝）—成熟 Flowering (spinning)-maturity