Greenhouse vegetable downy mildew prevention and control skills

Winter vegetable production has become one of the important ways for farmers to increase their income. Greenhouse cultivation has increased the yield and quality of vegetables. Cucumber is the main variety of greenhouse vegetables. The application of greenhouses has changed the microclimate and ecological environment in the field. High temperature and high humidity are beneficial to downy mildew. The disease occurs, therefore, prevention and control of downy mildew is an indispensable task in cucumber production management.

The prevention and control technology of cucumber downy mildew should be combined with chemical control and agricultural control. First of all, according to the climatic conditions, do a good job of ventilation and ventilation in the greenhouse, reduce the humidity in the field; timely remove the old diseased leaves of the cucumber bottom, and reduce the re-infection. The second is to choose the type of medicine, and the right medicine. At present, commonly used medicaments can be used: downy mildew, nitrile smog, and ami colorful, etc., pay attention to the use of medicinal agents to improve the control effect.

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