摘要
运用统计学原理和分析计算方法，较系统地分析了西藏山南地区冬小麦主要发育阶段气象因子对小麦灌浆时间、灌浆速度、千粒重的影响规律，得出小麦开花—黄熟期平均气温低、降水总量为１７１．６ｍｍ左右，是延长灌浆时间的有利条件；平均气温低、气温日较差小，对提高小麦千粒重最为有利，其中气温日较差是主要因子。
The effects of meteorological factors on thousand grain weight,filling velocity and filling period in main development phase of winter wheat in Xizang, were studied by using statistical principles and analytical method. The result shows that, during the flowering stage to the yellow maturity stage of wheat, the suitable conditions for extending filling period are lower mean temperature and about 171.6 mm of the amount of precipitation. Lower mean temperature and a little diurnal change of temperature are of great advantage for increase of thousand grain weight of whear, and the factor of diurnal change of temperature is significant.
出处
《中国农业气象》
CSCD
1997年第6期34-37,共4页
Chinese Journal of Agrometeorology
关键词
千粒重
气候生态因子
灌浆速度
冬小麦
Thousand grain weight
Climatic factors
Filling velocity
Winter wheat
