Black rot, bacterial diseases, with tetracycline, zinc thiazole, zhongshengmycin, ethylicin, agricultural streptomycin, acetic acid ester, chlorobromoisocyanuric acid, clothianidin copper, root irrigation or spraying, every 7 days 1 time 2-3 times.
The downy mildew can be controlled by using pyrazosulfuron-methyl, fosfomycin, dimethomorph, propamocarb and cyazofamid alternately, every 7 days 1 time, 2-3 times in total.