在露地栽培西葫芦蔓枯病极少发生,但在日光温室中该病蔓延迅速,严重影响日光温室西葫芦的产量及效益,已成为当前日光温室西葫芦生产中的主要病害。 一、症状及发病规律 1.症状 西葫芦蔓枯病主要为害茎蔓和叶片,果实也可受害。茎蔓受害,起初在茎基部附近产生水渍状长圆形斑点,后向上向下扩展成长 In the open field cultivation, gourd gourd rarely occurs, but the disease spread rapidly in solar greenhouse, which seriously affects the yield and benefit of zucchini in solar greenhouse. It has become the main disease in the production of summer squash. First, the symptoms and incidence of symptoms 1. Symptoms of zucchini mainly damage stems and leaves of vines, fruits can also be harmed. Stem vine damage, initially at the base of the stem to produce water-like oval-shaped spots, after the upward expansion down to grow