Abstract: The "Yin Wan No.1" was used as the experiment material under artificially water control to study the effects of water stress and rewatering on dry matter accumulation, root shoot ratio and yield per plant of peas thought a potted experiment. The findings show that at seedling stage, flowering stage and pod filling stage under water stress, pea canopy and root dry matter accumulation was inhibited, the root and canopy dry matter accumulation rate was significantly or very significantly decreased. And with the stress intensity increased and stress time prolonged inhibition increases; water stress resulted in pea root shoot ratio increases, There was a positive correlation between stress intensity and duration of stress. After rewatering, the dry matter accumulation and root shoot ratio of pea have a certain degree of compensation effect, severe stress compensation effect was larger than that of mild stress. The compensation effects of stress duration were different in different stages of growth, and with the advance of the growth process, the compensation effect was reduced. Effects of rewatering after water stress on yield per plant of pea, the seedling stage on yield per plant compensation effect was better, the pod filling period times, the compensation effect of flowering period was the smallest, and mild water stress compensation effect was greater than the severe stress treatment, short duration stress compensation effect was greater than the long duration treatment.

Key words: pea, water stress, rewatering, dry matter accumulation, root shoot ratio, yield per plant