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白菜霜霉病、软腐病和病毒病是大白菜生产的三大主要病害,同时还有多种害虫相继发生。根据病虫害的发生规律,可分三个阶段进行防治:第一阶段:7月下旬至8月初。防治对象:霜霉病、软腐病、病毒病,蝼蛄、地老虎等。防治措施:1.种植前应先做好规划,早熟和晚熟品种分区种植。2.选用抗病良种。
Cabbage downy mildew, soft rot and virus disease are the three main diseases of Chinese cabbage production, while a variety of pests occur one after another. According to the occurrence of pests and diseases, can be divided into three stages of prevention and treatment: The first phase: late July to early August. Control objects: downy mildew, soft rot disease, viral disease, cats, tigers and so on. Prevention and control measures: 1. Plan well before planting, precocious and late maturing varieties of planting. 2. Use resistant varieties.