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由于芦笋的褐斑病与茎枯病症状比较相似,在生产中因广大笋农对芦笋的褐斑病与茎枯病不能很好的区别,选用防治茎枯病的药用于防治褐斑效果差;如果用防治褐斑病的药剂防治茎枯病基本无效,既增加了费用又耽误了防治适期,造成病害发生严重。因此,必须准确的诊断出是什么病,然后才能根据病害选用药剂防治。一、症状区别1、病斑色泽。茎枯病病斑前期为水渍状,逐渐变为褐色小斑,再失水变为灰白色或灰褐色病
As the asparagus leaf spot and stem blight similar symptoms in the production of bamboo shoots because of the majority of shoots of asparagus leaf spot and stem blight can not be very good distinction between the selection of prevention and treatment of stem blight medicine for the prevention and treatment of brown spots Poor; if the prevention and treatment of brown spot with the agent of potato leaf blight basically ineffective, both increased costs and delayed the appropriate control, resulting in serious disease. Therefore, we must accurately diagnose what is the disease, and then based on disease prevention and treatment of selected drugs. First, the difference between symptoms 1, spot color. The early stage of the stem blight is a watery stain that gradually turns into a small brown spot and then becomes dehydrated to an off-white or taupe disease