(2)药剂防治。突出“早”字,发病初其可用1:1:200波尔多液,或50%的多菌灵可湿性粉剂500倍液,或50%的甲基托布津可湿性粉剂500倍液,或75%百菌清可湿性粉剂600倍液,或58%的甲霜灵~...