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根据大棚特点，采用降温、增温、熏烟的新方法防治大棚黄瓜病害，不仅防效高，而且无副作用。降湿大棚内湿度大，尤其是在黄瓜叶面结水滴的条件下，霜霉病、角斑病等病害发生迅速。如果将大棚内空气湿度降低到８３％以下，并维持４个小时左右，则可抑制病害的发生。降湿方...
According to the characteristics of greenhouses, the use of cooling, warming, fumigation of new methods of greenhouse cucumber disease prevention and control, not only high efficiency, but no side effects. Humidity within the greenhouse shedding, especially in the cucumber leaves knot conditions, downy mildew, angular spot disease and other diseases occur rapidly. If the greenhouse air humidity below 83%, and maintain about 4 hours, you can suppress the disease. Dehumidifier ...