青椒是冬季蔬菜栽培的主要品种之一,近年来栽培面积不断扩大。但一些地区的病害有逐年上升的趋势,影响了青椒的品质和产量,因此,对青椒猝倒病、立枯病、病毒病、枯萎病必须提前防治。一,为害症状青椒猝倒病和立枯病多在苗期发生。猝倒病起初是在茎基出现水渍状病斑,后变为黄褐色,子叶未凋萎而幼苗先倒地。立枯病先是在茎部产生椭圆形暗褐色水渍状病班,后凹陷绕茎扩展,最后全株萎缩干枯死亡。病毒病多发 Green peppers are one of the main cultivars of winter vegetables, and their cultivation area has been expanding in recent years. However, the disease in some areas has been increasing year by year, affecting the quality and yield of green peppers. Therefore, it is necessary to prevent and cure peppers, damping-off diseases, blight and blight of green peppers. First, the symptoms of pest Green peppers damping off and blight mostly in seedling stage. Dumping disease is the beginning of the water-based stain spot in the stem base, after turning into brown, cotyledons withered and seedlings first fell to the ground. Blight first in the stem to produce elliptical dark brown water-like disease class, after the depression around the stem expansion, and finally the whole plant withered death. Multiple viral diseases