一、炭疽病 症状:幼苗染病,在近地面茎上出现水浸状病斑,叶上病斑近圆形,黄褐色或红褐色,边缘有黄色晕圈;茎和叶柄染病,病部为稍凹陷长圆形病斑;果实染病,病部凹陷开裂,湿度大时溢出粉红色粘稠物。 防治方法:(1)与非瓜类作物实行3年以上轮作。(2)用75％百菌清可湿性粉剂800倍液或50％甲基硫菌灵可湿性粉剂800倍液喷雾。 First, the symptoms of anthrax: seedlings infected with submerged lesions on the surface stem near the spot, leaf lesions on the nearly round, brown or reddish brown, the edge of the yellow halo; stem and petiole disease, the disease is slightly Depression oblong lesions; fruit disease, disease Department of depression cracking, humidity, large overflow pink viscous material. Control methods: (1) and non-melon crops for more than 3 years rotation. (2) with 75% chlorothalonil WP 800 times or 50% thiophanate-methyl WP 800 times spray.