摘要： 以北京地区主栽品种之一的北农2号为材料，通过小麦不同生育期的供水处理，用对比方法研究了水分对小麦小花发育进程的影响。结果表明，随小麦生育给水量（次数）的减少，各类型茎蘖穗小花发育明显加快，呈现出高位蘖小花追赶低位蘖同位花，高花位小花追赶低花位小花的趋势，同时又不同程度地加速并提前了小花的两极分化，小花成花数减少。

关键词: 小麦, 水分, 小花发育

Abstract: The study showed that with diminution of the amount of water in the growing period of tillers ,different florets developed at a much quicker speed .The florets on higher tiller positions tended to grow as quickly as those on lower tiller positions .The florets on higher floret positions tended to grow as quickly as those on lower floret positions .In the meantime ,the polarization of florets developed more quickly resulting in the decrease of florets in number .

Key words: Winter wheat, Water, Floret growth

中图分类号: 

• S512.1