1. Pick. The removal of male flowers is an important method to prevent bacterial diseases and gray mold caused by rotten vines. Because pumpkins use medicinal melons, most male flowers are naturally spoiled, and the number of male flowers is high. When the stagnant male flowers are infected with bacterial diseases or gray mold, they are easy to cause rotten vines. Therefore, it is necessary to remove male flowers in time.
2. Tune. That is to adjust the appropriate environment. First of all, to strengthen ventilation during the day, control the temperature of the shed at around 30 °C, which is conducive to reducing the humidity inside the shed. Close the wind early in the afternoon, so as to avoid the night temperature is too low, the temperature difference between day and night is too much, and a high-humidity environment is formed. Secondly, during the daytime, the temperature is high and the evaporation is large, and the water requirement of the plant is increased. However, it is not possible to water the water at one time. The new high-fat film can be sprayed to reduce the evaporation of water and prevent the infection of the bacteria. Otherwise, the phenomenon of water spitting in the leaves of the plant at night is serious, which increases the humidity in the shed, which leads to the occurrence of rotten vine disease.
3. Prevention. In addition to gray mold, blight and bacterial diseases are also likely to cause pumpkin rot. After the pumpkin stalks are infected with the disease, the diseased part is sunken, and the water is immersed and rotted. The stems of the disease are contracted, thinned and softened, and the white mold layer is formed in the diseased part. Must be selected when using highly targeted chemical control agents with a new spraying with lipid membrane, to improve the utilization rate of pesticide active ingredients, reduce pesticide use, improve the control effect.
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