In order to prevent crop diseases, the friends of vegetable farmers generally adopt advance medication. Regardless of whether the plants are infected or not, the frequency of medication is relatively high. On average, the fungicide is sprayed for 5 to 7 days. This awareness of early disease prevention is correct, but this frequent use of drugs is not very scientific. Farmers and their frequent use of drugs, it is better to carefully observe, early detection of diseases, seize the timing of prevention and treatment in the early stages of disease medication. The “closer observation†mentioned here refers to the drafting in the shed in the morning after pulling the drafting curtain, especially for the plants on the front face of the shed, under the bleed outlet, near the entrance, etc., to observe carefully, and look at the leaves or stalks. There are no spots, there is no smell. Because of the low temperature and high humidity in these areas, it is a high-risk area for diseases. If winter greenhouse vegetables are infected with gray mold, when the drafting curtain is drawn in the morning, there will be more dew, and when the humidity is high, the gray mold layer will appear on the leaves, which is easy to identify. At this time, it is the early stage of the disease and the best time for disease prevention and control. At this time, drug control can achieve better control effect than that of drug use. Foam Dressing,Soft Elastic Waterproof Foam Dressing,Breathable Foam Dressing,High Absorbency Trauma Foam Dressing Zhende Medical Co.,Ltd , https://www.zhendemedicals.com
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