Can watermelon be heated with charcoal fire when it meets low temperature?

Solution of watermelon at low temperature: 1. It is best to use nutrition pots to raise seedlings in early sowing in low temperature areas, so that it is convenient to take heating measures in continuous rainy days.

2. For direct seeding in greenhouse, the sowing date should be selected according to the weather forecast, so that there will be 5 ~ 6 consecutive sunny days after sowing, so as to raise the soil temperature, promote the emergence of seedlings and avoid the rotten buds caused by cold current after sowing.

3. Use double-deck shed, and the space of arch shed should be as low and wide as possible. As long as it is not windy and cool weather, the greenhouse temperature will reach 30℃ immediately after seedling emergence.

4. After the cold current, watermelon seedlings are slightly frozen, but after the sun comes out, the small arch shed can be properly ventilated and cooled to prevent the shed temperature from rising rapidly, so as not to cause the rapid loss of physiological water.

5. Spraying coarse fog with a sprayer (that is, spraying more water, the excess fertilizer will flow downstream to the roots) can supplement 500-800 times of potassium dihydrogen phosphate to watermelon seedlings, which can not only strengthen the seedlings, but also improve their cold resistance and stress resistance.