Nongda 211 wheat varieties began to be planted in large areas in Beijing this year. This type of susceptibility to powdery mildew has been more serious in the past two years, especially in high-density and high-yield wheat fields. Powdery mildew has shown a trend of heavy emphasis, and the increase in grain weight per spike has been It poses a great threat and causes the output to fall short of the expected target, generally reducing production by 10% to 20%. At present, there are bacterial sources in the field, coupled with the large seeding rate of some Nanning 211 wheat fields, coupled with warm winter, strong growth before the winter, resulting in large groups, is conducive to the spread of germs, weed control should be combined at the end of March to early April, Spraying carbendazim and triadimefon can have a multiplier effect. Specifically, 10% of tribenuron-methyl wettable powder per acre, 10 ml of 20% triadimefon or 40 grams of 50% carbendazim was used for prevention and treatment. After heading wheat, the middle and lower leaves should be observed in the wheat fields with large amount of nitrogen fertilizer, large groups, and field-depressed crops. Immediately after the occurrence of sporadic powdery mildew, 20% of triadimefon 30 ml or 15% triadimefon can be used per acre. Wet powder 30-50 grams plus 50-60 kilograms of water spray. The prevention and control of powdery mildew must pay attention to the quality of the spray. It should be done after the dew has dried in the windless weather. Special attention should be paid to the spraying of the lower leaves. Whether or not the prevention and treatment is thorough is critical and can affect grain weight 3 to 4 grams. Natural Coix Seed Extract,Pure Coix Seed Extract,Jobstears Seed Extract,Coix Seed Extract NANJING ZELANG MEDICAL TECHONOLOGY CO., LTD , https://www.hawfitness.com