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。 Taking Beinong 2, one of the main cultivars in Beijing, as the material, the effects of water on the development of wheat flower were studied by contrasting the water supply of wheat at different growth stages. The results showed that with the reduction of water supply (number of births) of wheat, the development of florets of tillers and spikelets of various types obviously accelerated, showing the tendency of high tiller flower to catch up with low tillering flower and high flower to catch low flower, while different To a certain extent, speed up and advance the polarization of florets, reduce the number of flowers into flowers.