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夏秋季种植的大白菜,往往会新叶萎缩,越长越小,叶片黄化,主要原因是感染了病毒病,因为夏秋季节温度高,湿度大,大白菜容易感染病毒病,传播病毒病的昆虫如白粉虱、蚜虫、茶黄螨也特别多,所以,要加强防治。
Chinese cabbage planted in summer and autumn, new leaves often shrink, the longer the smaller, yellow leaves, mainly due to infection with the virus, because of the high temperature in summer and autumn, humidity, cabbage susceptible to viral diseases, the spread of viral diseases Insects such as whitefly, aphids, yellow tea mites are particularly large, therefore, to strengthen prevention and control.