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我市大白菜,常年栽培面积1.5万亩左右,供应期从9月至翌年5月.近几年霜霉病对大白菜生产威胁很大.为此,我们从1984～1988年对病害进行调查和防治研究.
Chinese cabbage, perennial cultivated area of about 15,000 acres, the supply period from September to May the following year. Downy mildew in cabbage production in recent years a great threat to this, we from 1984 to 1988 to investigate the disease And prevention and control research.