病毒病、软腐病、霜霉病被称为白菜的三大病害,病害的发生严重影响大白菜的产量和品质。为夺取大白菜优质、高产,确保“无公害”生产,应采取综合防治措施: 一、农业防治法 1.播前晒土前茬作物收获后,立即深耕晒土,以杀死前茬作物残体或土壤中的病菌。 2.选用抗病的优良品种一般青口菜比白口菜抗病。可根据当地生产实际选择适宜品种种植。如选用津青九号、天津青麻叶等。 Virus disease, soft rot, downy mildew is called cabbage three diseases, the occurrence of diseases seriously affect the yield and quality of Chinese cabbage. To seize Chinese cabbage quality, high yield, to ensure Agricultural Prevention and Control Act 1. sowing before harvesting crops before harvesting, Crop residues or soil bacteria. 2. Selection of good varieties of resistant general green vegetables than white cabbage disease resistance. According to the actual choice of the local production of suitable varieties of cultivation. Such as the selection of Tianjin No. 9, such as Tianjin green linen.