为了给人们提供低毒或无公害蔬菜,选用抗病品种是最为根本有效的措施。近年来人们为了选育抗病品种,在人工接种鉴定方法上进行了多方面探讨,摸索了一些接利,鉴定方法。据国外报导大多用抱子粉喷撒法接种,国内有用水洋菜培养基沾抱子粉接种等方法。以上接种方法均能致病,但都比较粗放,不能准确定量。通常用抱子悬浮液接种能解决上述问题。但是,据有关资料报导白粉病菌是较耐干旱的菌类,不能在水中萌发,且有高的 In order to provide people with low-toxic or pollution-free vegetables, the selection of resistant varieties is the most fundamental and effective measures. In recent years, people in order to breed resistant varieties, artificial inoculation identification methods conducted in many ways, to explore some of the access, identification methods. According to foreign reports, mostly sprinkled with spore powder method of inoculation, useful domestic water culture medium dip spore powder inoculation and other methods. The above inoculation methods can cause disease, but are more extensive, can not be accurately quantified. Inoculation with a spore suspension usually solves the above problem. However, according to the data reported powdery mildew is more resistant to drought bacteria, can not germinate in water, and high