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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地区别,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斑,病斑颜色比较浅。褐斑病病斑前期为褐色,逐渐变为棕褐色或红褐色,病斑颜色比较深。
As the asparagus leaf spot and stem blight similar symptoms in the production of bamboo shoots because of the majority of shoots of asparagus and the stem blight can not be a 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 the disease can be selected based on the prevention and treatment of drugs. First, the difference between the symptoms 1. Lesions color: stem blight lesion early stage of water-like stains, and gradually turned brown spots, and then lost water to gray or brown spots, lesions lighter color. Brown spots pre-brown lesions, gradually turned brown or reddish brown, dark spots more color.