气候变化对四川东北部冬小麦产量的影响

Effects of Climate Change on Winter Wheat Growth and Yield in the Northeast of Sichuan

气象因子是影响冬小麦生长发育及产量的重要因素。南充市是四川东北部重要的小麦生产区域,小麦是南充第二大粮食作物,对成渝经济区的粮食安全至关重要。本研究采用1998-2019年气象数据和小麦生长发育及产量数据,较为系统地分析日照、温度、降雨三大气象因子对小麦生产的影响。结果表明,日照和降雨是影响川东北冬小麦生产的重要限制因子,该结果可为使用栽培和育种手段调控川东北地区小麦的生长发育使其高产稳产提供参考。

Meteorological factor is one of the most important factors that affect winter wheat growth and development and yield.Nanchong City locating on the northeast of Sichuan Province is a vital area for the grain production of winter wheat which is the second grain crop in Nanchong and is of great importance for the food security of Chengdu-Chongqing economic zone.In this study,the effects of meteorological factors including duration of day,temperature and precipitation on the growth and development and grain yield of winter wheat from 1998 to 2019 were analyzed.The results showed that the duration of day and precipitation were the main limiting factors that affected the grain production of winter wheat in the northeast of Sichuan,which provided a reference by breading and cultivation approaches to obtain a higher grain yield of winter wheat in the northeast of Sichuan.