1、 Germination temperature

Watermelon should be soaked before germination. Soak the seeds in warm water for 4-6 hours, and keep the surrounding temperature at 25 to 32 degrees Celsius. If the effect of soaking in water is not good, you can appropriately increase the temperature and keep it at 30 to 32 degrees Celsius. The surrounding temperature should not be too low, otherwise the effect is difficult to achieve the expectation. Too high temperature is also inappropriate. If it exceeds 40 ℃, the inner and outer skin will shrink due to water loss within two hours, which will lead to the opening of seed coat and affect the later sowing growth

2、 Germination time

As long as the soaking time and water temperature are sufficient, the germination temperature is also very appropriate. It can germinate and sprout in almost 2-3 days. However, there is no accurate time for germination, which does not mean that it can sprout in a fixed few days. If the surrounding conditions are not appropriate, the germination time will also be prolonged, which need not be too worried

3、 Precautions

In addition to the temperature and time of germination, we should also pay attention to the problem of humidity. If the surrounding humidity is small, the external environment is relatively dry, and the seed coat is very wet, it is easy to cause problems in the outer coat, resulting in the opening of the outer coat