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绿菜花霜霉病是棚室绿菜花生产中的主要病害之一。目前,由于棚室内部温度低、湿度大,非常有利于霜霉病的发生和蔓延。该病一旦发生,扩展迅速,菜农要高度警惕,注意查看,发现中心病株要抓紧防治。一、发病条件绿菜花霜霉病是一种真菌型病害,病菌在病株残体、土壤或附着在种子表皮越冬,主要通过气流和雨水传播。棚室栽培中,农事活动是霜霉病的主要传
Downy greens downy mildew is one of the main diseases in greenhouse greengrocery production. At present, due to the low temperature inside the greenhouse, the humidity is very conducive to the occurrence and spread of downy mildew. Once the disease occurs, the expansion is rapid, vegetable farmers should be highly vigilant, pay attention to check and find that the diseased plants in the center should pay close attention to prevention and treatment. First, the incidence conditions Greenpeak Downy mildew is a fungal disease, bacteria in the diseased plant debris, soil or attached to the seed epidermis winter, mainly through the air and rain spread. In greenhouse cultivation, agricultural activities are the main transmission of downy mildew