In order to regulate rearly and quick growth of hybird rice,and promote effective spike rate and ripening rate,through testing tiller dynamic,effective spike rate,root activity,photosynthetic characteristics,etc,the effects of different oxygation treatments on hybrid rice in the tillering stage were studied by using oxygation simulation plot experiment. The results showed that the maximum tiller number and effective tiller number of single point,plant high,root activity,rooting rate,biomass accumulation and photosynthetic characteristics index ...