Effects of Water Stress on Dry-matter Distribution of Winter Wheat

[Objective]The research aimed to study the growth and development,each organ's dry matter accumulation dynamics of winter wheat under different water stress.[Method]Different water conditions were set up in pot experiment,and the effects of water stress on the matter accumulation and distribution of winter wheat were reviewed.Then the relation equation between yield and water consumption was established.[Result]The results showed that,the proportion of dry-matter distribution in stem was low under the fitting water condition.it was 32% and 39% in spike.But under the condition of high water stress and excessive water,the proportion of dry-matter distribution in stem became higher and the proportion in spike was lower.Under the condition of high water stress,the proportion in stem was 43% and 34%,and in spike,it was 41% and 27%.[Conclusion]The flowering and jointing stages are two periods during which winter wheat is especially sensitive to soil water.Attentions should be paid on management of soil water in the field during the flowering and grain filling stages.