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选用５ 种药剂做防治白菜黑斑病的田间试验，以７５ ％ 百菌清６００ 倍、６４ ％ 杀毒矾 Ｍ８５００倍和５０ ％ 代森锰锌５００ 倍防效较好，防效分别为７１ ．２ ％ 、７０ ．１ ％ 和６１ ．７ ％ ，防治后较对照增产１２ ．０４ ％ 、７ ．５５ ％ 和１６ ．３ ％
Five kinds of pesticides were used to prevent and cure cabbage black spot in field experiments. The effective rates were 600 times of 75% chlorothalonil, 8500 times of 64% anti-virus alum and 500 times of mancozeb 500 times. The control effects were 71 respectively. 2%, 70. 1% and 61. 7%, increase after control 12 compared with the control. 04%, 7. 55% and 16. 3%