抄録
1. The relation between the stage of growth and drought injury in wheat plants as well as in naked barley plants respectively was investigated. In the experiment, drought conditions were performed artficially by keeping the soil moisture at 35% of its water capacity for 30 days, the treatment being given in every experimental plot at the period differing by 20 days with each other. 2. The results showed that harmful effects of drought on plant growth and yield were most t remarkable when it occurred at the stages where ears reached to full development and began to emerge, while they were least or not recognizable when given or early stage of growth.
