Watermelon is a good fruit to cool down in summer. The annual market sales are large, the planting area is wide, and the benefits are considerable. Many farmers want to grow watermelons, but they don't know the technology.

1.Temperature

Watermelon is a heat-loving crop and cannot tolerate low temperatures. Different growth stages require different suitable temperatures. The germination period is 25-30 degrees Celsius, the expansion period is 25-28 degrees Celsius, and the flowering and fruiting stage is 28-30 degrees Celsius.

2.Moisture

There are three sensitive periods for watermelon water response, one is the sowing and germination period, the other is before and after flowering and fruiting, and the third is the rapid fruit expansion period.

3.Soil

Sandy soil with loose structure, good drainage and rich organic matter is most suitable for watermelon cultivation. It can grow and develop normally within the pH range of 5 to 7.

4.Fertilizer

The absorption ratio of nitrogen, phosphorus and potassium in watermelon is 3.25:1:4.33.