基于分期播种试验的小麦越冬前适宜指标探讨

基于2006-2007和2007-2008年度郑麦366的分期播种试验资料，结合郑州农业气象试验站多年同品种小麦业务观测资料，利用相关分析、最小显著差数等方法，对越冬前积温、小麦生长状况及产量构成进行了分析，结果表明：冬小麦越冬前的生长状况与各发育阶段积温有很强的相关性，产量构成的三要素也与越冬前各发育阶段积温及分蘖数...

Discussion of Suitable Index for Wheat Before Overwintering Based on Interval Sowing Test

Based on interval sowing tests in 2006-2007 and 2007-2008 of winter wheat for type of Zhengmai 366, combined with the observational data, which was the same variety for operation and services of many years, the paper studied the accumulated temperature, wheat growing condition before overwintering, as well as yield structure by methods of correlation analysis and least significant difference. It was concluded that： before overwintering of winter wheat, there was strong correlation between growing conditions and accumulated temperature of different developing stages, meanwhile, three elements that composed the final yield had dependence relation with accumulated temperature of different developing stages and tiller number, as well as LAI to a certain extent. Discussed wheat indexes as suitable sowing date, sowing temperature, et al has important sense for analyzing climate warming adapting measures of agriculture.