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1.选用抗病品种。2.至少有三年以上的轮作期。3.加强栽培管理,适时播种,密度适当。4.药剂防治:(1)种子处理:25%瑞毒霉可湿性粉剂按种子量的0.4%拌种,或58%甲霜灵锰锌可湿性粉剂按种子量的0.3%拌种。(2)药剂喷施:苗期或成株发病后,喷洒58%甲霜灵锰锌可湿性粉剂1000
1. Use resistant varieties. At least three years of rotation. 3. To strengthen the cultivation and management, timely sowing, appropriate density. 4. Medicament control: (1) seed treatment: 25% rebemorne WP according to the seed amount of 0.4% seed dressing, or 58% metalaxyl manganese zinc wettable powder according to the seed amount of 0.3% seed dressing. (2) Spraying agent: after the onset of the seedling or adult, spraying 59% metalaxyl manganese zinc wettable powder 1000