Autumn is the most serious period of the occurrence of powdery mildew. After the leaves are covered with a layer of white powdery mildew, the leaves are chlorotic and green, and the young fruit shrinks and falls off. The tree vigor is seriously degraded, and the fruit cannot expand and cannot be matured. , Low sugar content, light fruit flavor, poor color, yield and quality are significantly reduced. Therefore, in the autumn, we must pay close attention to the prevention and treatment of powdery mildew, to protect the leaves, promote fruit setting, promote fruit enlargement and coloring, increase production and improve quality. Specific prevention and control methods: In the autumn, attention should be paid to the inspection of the leaves of the green jujube and the appearance of a layer of white powder on the leaves. When the leaf color is chlorotinous, it is necessary to spray 800 times 50% aqueous solution of triadimefon WP, or 400 times 20% aqueous sulfur suspension solution, or 8000 times 40% aqueous solution of fluorosiliconazole, or 4000 times 30% aqueous solution of difenoconazole and propiconazole, or 1500 times of 80% aqueous solution of myclobutanil wettable powder Spray once every 10 to 15 days, and spray 2 to 3 times continuously to evenly spray all the branches and leaves inside and outside the crown. If we can add 1500 times 0.001% natural brassin, 0.3% potassium dihydrogen phosphate and 800 times humic acid active liquid fertilizer with the spray in the liquid, the control effect will be better, which will not only enhance the efficacy but also improve the control effect. Diseased leaves return to normal growth, which in turn promotes tree vigor, promotes fruit development, boosts fruit growth, promotes coloration, increases yield, and improves quality. Herbal And Flower Tea,Herbal Flower Tea,Red Bean Barley Slimming Tea,Lotus Leaf Jasmine Buckwheat Tea Huantai Biotechnology Co., Ltd. , https://www.huantaifds.com