怎样防治黄瓜黑星病黄瓜黑星病又叫黄瓜疮痂病，是一种属于毁灭性的真菌病害，主要危害嫩叶和幼瓜，同时也危害叶片、茎蔓、卷须和瓜条。一般幼苗感病后，首先在子叶上产生黄白色圆形斑，严重时常导致整个幼苗腐烂、枯死。定植后发病时，首先在生长点附近的嫩叶上产生褪绿... How to prevent cucumber scab The cucumber scab also known as cucumber scab disease, is a devastating fungal disease, the main harm to young leaves and cucumbers, but also endanger the leaves, stems and vines, tendrils and melon. General seedling flu, the first in the cotyledons produce yellowish white round spots, severe and often lead to the entire seedlings decay and death. After colonization onset, the first in the growing point near the young leaves produce chlorotic ...