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试验结果表明，用１２％绿乳铜乳油６００～１０００倍液于大棚黄瓜霜霉病发病初期用药，能有效地控制其发生蔓延。施药１０ｄ与１５ｄ后的防效均在８０％以上，与７２．２％普力克水剂的防效相当。
The results showed that the use of 12% green milk copper EC 600 to 1000 times in the greenhouse cucumber downy mildew early onset of medication, can effectively control the spread of its occurrence. After 10d and 15d application of the control effect are more than 80%, and 72.2% 普 力克 aqueous agent control effect is quite.