May be harmed by pests and diseases; It can be controlled by the following agents: 35% chlorantraniliprole dispersible granules 6000~ 15000 times, 52.25% cypermethrin chlorpyrifos EC 1000- 1500 times, 48% chlorpyrifos EC 800- 1000 times, 5% emamectin benzoate microemulsion 7500- 10000 times,/kloc-. 9.5% fenazaquin EC 2000 ~ 3000 times, 15% pyridaben EC 1 500 times, 5% flufenoxuron EC1000 ~ 2000 times, 73% propargite emulsion 2500 ~ 3000 times,/kloc. 10% compound liuyangmycin EC 1000 times, 5% hexythiazox EC 2000 times, 70% imidacloprid wettable powder 7500~ 10000 times, 10% nitenpyram soluble solution 3000 times, 20 times. 28% cypermethrin phoxim EC 1000~ 1500 times, 0.5% berberine aqueous solution 500~800 times, 25% propiconazole EC 3000 times, 80% complex mancozeb wettable powder 1000 times, 70 times. 50% azoxystrobin dry suspension 2500 times, 40% flusilazole emulsifiable concentrate 5000 times, 25% azoxystrobin suspension 1500 times, 15% hymexazol aqueous solution 800~ 1000 times, 80% hymexazol thiram wettable powder 40 times. 77% copper hydroxide wettable powder is 400-600 times, 15% mixed amino acid copper, zinc, manganese and magnesium aqueous solution is 300 times, and one or two of the above agents can be mixed with 50% chlorobromoisocyanuric acid soluble powder 1500 times and 0. 15% natural brassinolide. Kebao plant eugenol 1500-3000 times (transplanting crops, chemical and fertilizer damage, freezing damage, waterlogging damage, strong roots and strong seedlings, controlled use 1500 times) is mixed evenly and sprayed on the leaves.