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一、为害情况当前,大白菜“干烧心”病已成为我国大白菜生产上的主要障碍。天津、北京、大连、新乡、沈阳,西安、福州等市以及山东、山西、河北、吉林、黑龙江和新疆等地均有发生,并有逐年加重的趋势。一般地块的发病率为5—10％,严重地块的发病率为80—100％。由于此病在白菜贮藏期继续发展,使大白菜干腐变质,经济上的损失是很大的,已引起各方面重视。据1982年参加北京座谈会的代表们统计,九省市冬贮大白75万亩中,发病面积在15万亩
First, the damage situation At present, the Chinese cabbage “heartburn” disease has become the main obstacle in Chinese cabbage production. The cities of Tianjin, Beijing, Dalian, Xinxiang, Shenyang, Xi’an and Fuzhou, as well as Shandong, Shanxi, Hebei, Jilin, Heilongjiang and Xinjiang, all have their occurrences and have been increasing year by year. The general block of the incidence of 5-10%, severe block incidence of 80-100%. As the disease continues to develop in the cabbage storage period, so that Chinese cabbage dry spoilage, the economic losses are great, has attracted all attention. According to the statistics of the delegates attending the Beijing Symposium in 1982, there were 750,000 mu of winter storage in nine provinces and municipalities with an incidence of 15 mu