Who knows the cultivation techniques of watermelon?

1, timely sowing. Cultivate stout melon seedlings. The key to cultivating strong seedlings is sowing in time. Seed dressing with a new type of high-fat film (which can be mixed with seed coating agent) before sowing can drive away underground pests and diseases, isolate virus infection, and do not affect the function of germination and swelling, strengthen respiratory intensity and improve seed germination rate. Using hotbed plastic film arch shed to raise seedlings. In the middle and late stage of seedling raising, it should be exposed more and covered less, exposed during the day and covered at night. 3-5 days before transplanting, the film can be uncovered and the seedlings can be tempered all the time, which is conducive to cultivating healthy and strong melon seedlings.

2. Apply sufficient base fertilizer. Watermelon needs a lot of fertilizer, so applying high-quality base fertilizer is the basis for obtaining high-quality, stable and high-yield watermelon. Each mu should be applied with decomposed fertilizer 1500-2000 kg, and compound fertilizer should be added with 25-30 kg (especially watermelon). The fertilization method can be changed from single furrow fertilization to double furrow fertilization, that is, a ditch with a depth of 20-30 cm is opened on both sides of the middle of the compartment surface, and then fertilizer is applied into the two ditches, and the soil is covered by about 5 cm, and melon seedlings are planted between the two ditches. The advantage of this fertilization is that it does not burn seedlings and can prevent overgrowth. Spraying Wang Kehua No.3 in time can transform the vegetative growth of plants into reproductive nutrition, inhibit the overgrowth of main shoots, promote flower bud differentiation, blossom more, improve the quality of pollen fertilization, blossom more and bear more fruits, prevent fruit drop and promote development.

3. scientific topdressing. On the premise of applying foot fertilizer, only 200 kg of human manure and 3 kg of urea are needed in the vine stretching period. Watermelon is very sensitive to water and fertilizer during flowering and fruit setting. If there is too much fertilizer and water at this time, the plants will be overnourished, which will easily lead to overgrowth, which is an obstacle to sitting on the melon. Therefore, when the young fruit is as big as an egg, topdressing can be appropriate. Combined with spraying Zhuangguadiling, the pedicel of melon can be thickened, and the directional transport of nutrition can be strengthened, so that the melon can develop rapidly, with beautiful appearance and delicious taste. The growth cycle does not drop flowers, melons, cracked melons and deformed melons. When the watermelon expands, the root system just extends to two fertilization ditches, which is full of nutrients and is beneficial to quickly grow into a standard melon-shaped big melon.

4. Pest control. The damping-off disease, Fusarium wilt and anthracnose are the three main diseases of watermelon. Prevention and treatment of seedling damping-off, pay attention to the control of ventilation and watering of seedbed. Prevention and control methods of Fusarium wilt and anthracnose: avoid continuous cropping, generally every 4-5 years, do a good job of ditch cleaning and drainage, and pull out diseased plants in time when found. Chemical control: Spraying with 75% chlorothalonil wettable powder, 70% dixone, 20% Spatholobus Spatholobus or Bordeaux solution has good control effect. Watermelon pests mainly include cucumber worms, cutworms, aphids and red spiders at seedling stage. The chemical control method is: dichlorvos, dimethoate, trichlorfon and carbofuran are used respectively, and the effect is good.