Melon seedlings and planting notes
1. To strengthen the temperature management: After sowing until emergence, this time the stage of seed germination. Should maintain a high seedbed temperature to prevent slurry seed or freezing buds? Generally 25 °C ~ 30 °C is appropriate. After unearthed seedlings until the emergence of true leaves, this time is a critical period for the growth of hypocotyls, the seedbed temperature should be reduced to prevent the emergence of "high-leg seedlings", generally 20 °C ~ 25 °C is appropriate. When the true leaves of Miaozi emerge, the rapid growth of the hypocotyls is basically completed, and the true leaves begin to grow rapidly. At this time, the daytime temperature of the seedlings should be appropriately increased at 25°C to 30°C, and the nighttime temperature should be no lower than 15°C. Increase ventilation during the day.
2. Increase seedling photoperiod: Due to high temperature, short illumination, and weak light, seedlings often appear yellow, leaf color is light, leaves are thin, and plant growth is weak. Therefore, you should extend the lighting time as much as possible during the nursery period, and guarantee 6-8 hours every day. Remove debris, water droplets, and droplets on the surface of the film in time to increase light transmittance.
3. Timely disease prevention: Seedlings easily appear low temperature or high temperature, the formation of weak seedlings, combined with lack of light and humidity and other reasons, prone to damping-off. In addition to production should strengthen the temperature, humidity and light management at the seedling stage, it should also be timely spraying and disease prevention. 600 to 800 times thiophanate methyl can be sprayed.
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