研究了不同生育期土壤水分与小麦的小花发育、开花、结实率及产量的关系 ,并进行了土壤水分对穗粒数影响的定量分析研究 ,提出了保持小花正常发育和提高小麦结实率的适宜土壤水分范围。 The relationship between soil moisture and wheat flower development, flowering, seed setting and yield at different growth stages was studied. The quantitative analysis of the effect of soil moisture on the number of grains per spike was carried out. It was proposed that the proper development of floret and the improvement of the seed setting rate Soil moisture range.