播期和温度对冬小麦抽穗期的影响分析

Correlation Analysis of Sowing Date and Temperature on Heading Date of Winter Wheat

小麦抽穗标志着其从营养生长(根和茎、叶等的生长)转向生殖生长(开花结实),这是决定小麦产量最为重要的关键期.影响小麦抽穗的因素很多,合理地控制小麦生长的条件,使其适时抽穗,进而增加小麦的产量显得尤为重要.选用了具有代表性的不同冬小麦品种进行试验,采取的方法是田间试验法,从两年的数据中分析出播种日期与抽穗前月均温对冬小麦抽穗日期的相关性.基于对郑麦162、航裕33、周麦38号、永民麦1号、先圣368和华展166等39个品种两年的试验结果数据分析,其中以周麦18为对照品种、百农207为辅助对照品种,最终得出冬小麦抽穗日期与抽穗前的4月份均温呈负相关而与播种日期关系不大的结论,为科学生产提供一定的参考依据.

The heading of wheat means a shift from vegetative growth to reproductive growth,which is the most important key period in determining wheat yield.There are many factors affecting the heading of wheat.It is particularly important to reasonably control the conditions of wheat growth to make heading in time and increase wheat yield.In this experiment,we selected different representative winter wheat varieties from China,adopted the field test method,and analyzed the correlation between the sowing date and the temperature of winter wheat heading from the two-year data.This paper is based on the analysis of the two-year experimental results of the thirty-nine varieties including Zhengmai 162,Hangyu 33,Zhoumai 38,Yongminmai,Xiansheng 368,Huayan 166 and so on,among them,Zhoumai 18 as the control variety and Bainong 207 as the auxiliary control variety.It is concluded that the heading date of winter wheat is negatively corelated to the April mean temperature before heading but not related to the sowing date.