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大白菜白斑病过去为害不重,但近年来内蒙古、山东胶东半岛、长江两岸均有日趋严重之势,1978、1979、1980年内蒙古连年发生,1980年包头202厂农场247亩连片发生,发病率100%,病指42.5%,其中60余亩病指高达81.2%,减产40%左右。对白斑病的防治,生产上缺少有效杀菌剂,我所1979年明确新杀菌剂嗪胺灵、霉锈净对防治白斑病有效后,在继续研究其使用技术的同时,做了多菌灵防治白斑病的系统试验,试验明确多菌灵对白斑病的防效可和嗪胺灵、霉锈净等新内吸杀菌剂媲美。
Occurred in the past, Chinese cabbage white spot disease is not heavy, but in recent years, Inner Mongolia, Shandong Jiaodong Peninsula, the two sides of the Yangtze River are increasingly serious trend, 1978, 1979 and 1980 occurred in Inner Mongolia year after year, in 1980 Baotou 202 Farm 247 acres of contiguous occurrence, incidence Rate of 100%, disease means 42.5%, of which more than 60 acres of disease index as high as 81.2%, cut about 40%. The prevention and treatment of leukoplakia, the lack of effective production of fungicides, 1979 I clear the new bactericide azathimycin, mildew net rust effective against white spots, while continuing to study the use of its technology at the same time, did carbendazim prevention and treatment White spot disease system test, test clear carbendazim against white spot disease and azathimycin, mildew net new germicide comparable.