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菜心、小白菜是广西省梧州市主要的秋菜,是梧州市冬春半年的主食蔬菜,但菜心、小白菜在生长期间常因病虫为害每年减产15%左右,严重年份甚至达50%上。菜心、小白菜的主要病虫害有霜霉病、炭疽病、软腐病、病毒病、丝菌核、菜青虫、小菜蛾和菜蚜等。菜心、小白菜苗期最容易感染病毒病,发病后植株抗病力减弱,后期易感染霜霉病、软腐病等,严重影响产量,所以加强苗期管理,及时消灭传毒蚜虫,搞好苗期病毒病的防治是十分重要的。
Cabbage, cabbage is the main autumn vegetables in Wuzhou City, Guangxi Province, Wuzhou winter and spring is the staple food for six months, but Brassica campestris, cabbage pests and diseases are often cut during the annual growth rate of about 15%, even in severe years up to 50% on. Apricot cabbage, cabbage’s main pests and diseases are downy mildew, anthracnose, soft rot, viral disease, filamentous fungus, Pieris rapae, diamondback moth and cabbage aphids. Cabbage heart, cabbage most susceptible to virus disease at seedling stage, disease resistance weakened after the onset of susceptible to the late susceptible to downy mildew, soft rot and so on, seriously affecting the yield, so strengthen seedling management, the timely elimination of poisoning aphids, engage in Prevent seedling virus disease is very important.