1.病害症状黄瓜花腐病在保护地和露地均有发生,但以保护地严重。发病初期黄行代号84瓜花和幼果发生水渍状湿腐,病花变褐腐败,病菌从花蒂部侵入幼瓜后,向瓜上部发展,致病瓜外部逐渐褐变,表面可见白色茸毛状物在瓜毛之间蔓延,有时可见黑色头状物,高温高湿条件下病情扩展迅速,干燥 1. Disease symptoms cucumber flower rot in the protected area and the open have occurred, but in order to protect the serious. In the early stage of the disease, the yellow line code 84 cucumber flower and young fruit occurred wet-like wet rot, diseased flowers turned brown and corrupted, the bacteria infiltrated the cucumber from the pedicle, and then developed to the upper part of cucumber. Hairy hair spread between the melon hair, sometimes visible black head, rapid expansion of the condition of high temperature and humidity, dry