Seed selection: If you want high yield of watermelon, you should choose full, mature and robust watermelon seeds. Pick it out and soak it in warm water at 55 degrees Celsius, which has bactericidal effect. Then disinfected with a small amount of Baijunling solution, and then air-dried.

Accelerating germination: Watermelon needs to be soaked to accelerate germination before sowing. First soak the seeds in warm water and wash them, then wrap them in moist and dense gauze and put them in sunny environment for two or three hours. Then cover it with a layer of moisture and put it in an incubator at 30 degrees Celsius. After waiting for 36 hours, the seeds will germinate.

Mixed soil: soil with good drainage and permeability and rich humus should be selected, and a small amount of compound liquid fertilizer can be added and mixed evenly. After that, water it enough to keep the soil moist.

Sowing: Put the seedlings into nutrient soil, sprinkle the seeds on the soil with the bud end facing down, and then cover with a layer of soil about two centimeters. Then cover the flowerpot with a layer of plastic film, leaving a few small holes to breathe.

Water and fertilizer: after the seedlings are planted, they can be watered once a day, but the amount of water should be controlled and the soil should be moistened. When the seedling height is about 40 cm or 60 cm, the watering frequency can be reduced, and it can be watered once every two or three days on average, but attention should be paid to watering thoroughly and loosening the soil every time. As for fertilization, dilute Bica water-soluble fertilizer can be applied once every three or four weeks, and compound fertilizer solution can be added during fruit setting.