Compensatory effects of water-recovery during different growth durations on winter wheat under water stress

The compensatory effects of supplying water after drought during tillering stage,jointing stage and flowering stage on the growth and grain yield are studied. The results show that rewatering after drought during these growth duration has various degrees of promotion effect on growth and yield respectively. The height of plant,green leaves areas per plant,dry matter weight and grain yield of the rewatered treatments exceed those of their drought controls and show compensatory effects. Rewatering during jointing stage has the most compensatory effects on yield increase,secondy is the rewatering during flowe ring stage,and rewatering during tillering stage is the least.Water-recovery during jointing stage could come to the goal of water-saving and yield increase.