Does watermelon grow on trees or on the ground?

Watermelon is an annual vine; Stems and branches are stout, with obvious furrows, long and dense, white or fawn villous. Tendrils are stout, pubescent, dichotomous, petiole thick, 3- 12 cm long, 0.2-0.4 cm thick, with inconspicuous grooves and densely pilose; The leaves are papery, triangular, oval in outline, white and green, 8-20cm long and 5-15cm wide.

The fruit is large, nearly spherical or oval, fleshy, juicy, with smooth skin and various colors and patterns. Most of the seeds are oval, black and red, sometimes white, yellow, light green or variegated, with smooth sides, obtuse base and slightly arched edges, with a length of 1- 1.5 cm, a width of 0.5-0.8 cm and a thickness of 1-2 mm. The flowering and fruiting period is in summer.

Extended data:

Growth habit of watermelon:

1, temperature:

The suitable temperature for germination is 15 ~ 20℃ for 7 ~ 13 days; The suitable temperature for seedling stage is 15 ~ 25℃ for 25 ~ 30 days. The suitable temperature of vine extension period is 20 ~ 25℃, 18 ~ 20 days; The suitable temperature for fruiting period is 25 ~ 35℃ and 28 ~ 45 days, and the number of days required for fruiting period depends on the characteristics of varieties.

Early-maturing varieties are 28 ~ 3 1 day, middle-maturing varieties are 32 ~ 35 days, and late-maturing varieties are more than 35 days. During flowering and fruit setting, the temperature shall not be lower than 65438 08℃; The suitable temperature for fruit expansion and ripening is 30℃; After sitting on the melon, it needs a large temperature difference between day and night; The optimum temperature for root growth is 28 ~ 32℃, and it is vulnerable to cold damage at 6 ~ 10℃.

2. Lighting:

I prefer light and shade, with a light compensation point of 4,000 lux and a light saturation point of 80,000 lux. Results The sunshine hours should be more than 10 ~ 12 hours, and less than 8 hours is not good. Under sunny and strong light conditions, the plants grow well, with high yield and excellent quality. On the contrary, under cloudy and weak light conditions, plants grow weakly, yield is low and quality is poor.

Baidu encyclopedia-watermelon (cucurbitaceae)

Baidu encyclopedia-watermelon genus