Multi-membrane shed watermelon tips
Hydrolyzed Sponge White Powder Sponge Chengdu Sino Tech company , https://www.cnherbfun.cn
April 02 11:04:48, 2021
Spring awning awning watermelon is generally covered with a multi-layer film, and watermelon is also hi-temperature. With the temperature rising, the three-story membrane has been gradually changed into two layers. Many melon farmers are accustomed to seeing temperature alone. In fact, there are many drawbacks. The correct approach should be based on the growth of watermelon vine vines to determine the timing of the wind, if the stem vines grow too prosperous, appropriate early release, on the contrary can be appropriate delay, but the temperature within the shed can not exceed 35 °C. Close the tuyere is quite particular, one is the time to close the tuyere. In general, the south wind is warm and the north wind is cool, so when the south wind blows, it can be prolonged. The second is to close the tuyere in batches. When the temperature in the greenhouse is lower than 22°C, close the air outlet of the outermost film. When the temperature continues to drop below 19°C, close the air outlet of the two membranes. Finally, the arching of each planting line is covered. This method of ventilation is not only effective in cultivating robust plants, but also very beneficial to the transformation of watermelon from vegetative to reproductive growth. There are many male flowers, and the amount of pollen per plant is also large. The watermelon stalk is also relatively coarse when pollinated, and can be pollinated. Obviously improve the rate of sitting. In addition, one-time air release tends to change the temperature and humidity conditions in the shed quickly, which can easily cause “flash seedlingsâ€. The light leaves have chlorosis, water loss and dryness. The heavy leaves are dry, and when the humidity is high, they are easily induced. Bacterial diseases.