Abstract: Experiment shows that the four factors of sowing date,sowing quantity,irrigation and fertilizer are closely related to incidence of Avenanuda,sterile spikerlets and yield.In the summer areas of naked oats sowed,seedtime is on March 6,sow volume is 105kg per hectare and the first irrigation is in the 3-4 leaf stage;The second irrigation is in the 5-6 leaf stage and application of nitrogen and phosphate are increased at the same time.Above-mentioned measures can effectively reduce sterile spikerlets,incidence rates and improve Avenanuda,production greatly.