Who can talk about the planting techniques of watermelon in summer?

1. Huapi Guatainong 8 with good appearance, good internal quality, strong disease resistance and good market sales can be selected as an excellent variety. This variety belongs to the first generation of medium-mature hybrid watermelon, and its whole growth period is 90- 100 days. The fruit is oval with a light green background and the peel is covered with dark green stripes. Bright color, red flesh, small and few seeds, not hollow, fine and crisp texture, good quality. The average weight of a single fruit is about 8 kilograms.

2. Sow in time, cultivate strong seedlings, raise seedlings in nutrient pots at the end of April and early May, and sow after germination. Generally, the seeds are soaked for 2-3 hours, the mucus is washed and dried in the shade at 28-30℃. After the seeds are crushed and germinated, they are sown in a nutrient bowl, with each pot 1 seed covered with soil1.5cm.

3. Transplanting in time, reasonably close planting seedlings for about 30 days, transplanting when there are 3-4 real leaves, and planting about 500 plants every 667m2.

4. Strengthen field management, control pests and diseases (1), and apply fertilizers scientifically. Generally, 300kg of diluted human excrement is poured every 667m2, and it is colonized for 2-3 times before tendrils are stretched; When the vines grow to 35 cm, topdressing is carried out for the second time, cake fertilizer lOOkg and compound fertilizer 10kg are applied during ditching, and water is actually applied after ditching; When the young fruit in the normal fruit-bearing part grows to the size of an egg, the third topdressing is carried out. At this time, watermelon is at the peak of fertilizer absorption, so phosphorus and potassium fertilizer should be used as the main fertilizer, combined with nitrogen fertilizer, and 30kg compound fertilizer should be applied every 667m2, first spread and then watered. (2) Use water rationally and raise melons correctly. Irrigation with slow seedling water 1 time for 3-4 days after planting, irrigation with swollen melon water for 5-6 days after male flowers bloom, and 1 time for 3-4 days. Water should be reduced 7- 10 days before fruit ripening to increase sugar content. The ideal fruit setting position of watermelon is the main vine 15-20, and the second or third female flower sets fruit; The best lateral vines are 10~ 15 nodes and 1 female flowers. Generally, 2 or 3 vines are pruned, leaving 1~2 fruits per plant. (3) pest control. Pay attention to the prevention and control of damping-off disease, anthracnose, aphids, etc. 70% thiophanate-methyl 1500 times solution or 70% mancozeb 1000 times solution can be used for disease control, and 5000 times solution or 2500 times solution can be used for spraying tobacco aphid for insect control.

5. Timely harvest 35 days after flowering. When the watermelon fruit is round and the texture is clear, it can be harvested and marketed. Early or late harvest is not conducive to the improvement of goods.