豆科植物病毒病,在全国各地均有发生,近年来,呈加重趋势,春、夏播的大豆及菜用的豇豆、毛豆、扁豆、豌豆、蚕豆等都有零星或大面积发生、受害程度轻重不一,一般减产30%左右,严重影响豆科植物的品质、产量和商品价值。一、发生规律。豆科植物病毒病多半是由豆类花叶病毒侵染发病,带毒种子是病毒病的初次侵染源,并可随调种远距离传播,保护地豆科蔬菜、田间越冬的野生寄主植物及土壤中的病残体也可成为毒源。在自然条件下,蚜虫是田间主要传毒媒介。蚜虫通过吸食带毒植物传染,蚜虫的虫口密度大,发生就越重,病 Leguminous plant virus disease occurs in all parts of the country. In recent years, the trend is aggravating. The spring and summer sowing of soybean and vegetable cowpea, soybean, lentils, peas, beans and other sporadic or large-scale occurrence, the degree of victimization Varying in severity, the general reduction of about 30%, seriously affecting the quality of legumes, yield and commodity value. First, the law occurs. Leguminosae virus disease is mostly caused by the infection of leguminous mosaic virus. The infected seed is the primary infection source of the virus disease, and can be spread with long-distance transmission to protect leguminous vegetables in the field. The wild host plants in winter And the soil of the sick can also become a source of poison. Under natural conditions, aphids are the main vector of transmission in the field. Aphids infected by taking poisonous plants, aphids insect population density, the more serious the disease