气象因素对冬小麦生育和产量影响研究

利用庆阳市气象局气象资料和陇东学院农林科技学院冬小麦试验田试验资料,分析2003～2010年庆阳市冬小麦生育期的气候变化特点及其对冬小麦产量的影响,并对该试验区域冬小麦各生育阶段主要气象因素与小麦产量相关性分析.结果表明,该区气象因素变化最大的是降水量,其次是日照和积温,其中底墒水的变幅最大,其次是后期降水;对冬小麦生长影响而言,前中期日照不足,前期气温偏高（即暖冬）,后期降水过多,气温偏低,以及前期干旱、后期大风雨天气均对小麦生产不利,反之则有利.

Effects of Meteorological Factors on Fertility and Yield of Winter Wheat

Using data of Qingyang City Meteorological Bureau and winter wheat experiment field of Agricultural College in Longdong University,the climate variation features of winter wheat growth period and the effects on winter wheat yield in Qingyang City during 2003-2010 were analyzed.The correlation between meteorological factors and wheat yield in each growth period of winter wheat was studied.The results showed that precipitation has most significant change,followed by sunshine and accumulated temperature.Insufficient sunshine,high temperature in early days and more precipitation,low temperature in later period,drought in early days and heavy rainstorm in later period is harmful to wheat production.