“高温”对我国小麦生长发育及产量的影响

The Impacts of "Higher-Temperature" on Wheat Growth and Yield in China

本文通过田间试验、人工气室模拟试验、历史资料统计分析及采用ＣＥＲＥＳ冬小麦模式，分析“高温”对小麦（春小麦、冬小麦）发育历期、产量结构及经济产量的影响。结果表明：随温度升高，小麦发育历期缩短，高温使春小麦经济产量下降，温度升高改善了冬小麦越冬条件，对穗粒数及籽粒重有利。返青后的“高温”对冬小麦经济产量不利。

Using field experiments, artificial chamber simulated experiments, historic data statistic analysis and CERES winter wheat models, the impacts of 'higher-temperature' on both winter wheat and spring wheat development stage, production structure and economic yield are analysed. The results show that the wheat development period is shorten and the economic yield decreases as temperature raises. The increasement of temperature improves the overwinter condition for winter wheats which is favourable for ear grain numbers and grain yield. However the 'higher-temperature' after turngreen is unfavourable for winter wheat economic yield.