Key techniques of planting autumn pumpkin

Varieties should be selected with good quality and good taste, such as Miben pumpkin and Li Ziman introduced from Japan. You can also choose better local varieties. According to the production practice in recent years, the suitable sowing time of autumn pumpkin is from mid-July to early August. The pumpkin seeds were soaked in 50 ℃ hot water for 10 minutes, then soaked in warm water for 8 hours, and then germinated and whitened in the environment of 26 ℃ ~ 30 ℃. It is best to use a nutrition bowl to sow a white seed in each bowl, and the radicle is covered with fine soil 1cm and 1.5cm thick. After sowing, pour through the seedling bed with 1500 times of 50% carbendazim, then cover a layer of straw or weeds, and remove the mulch when the seedling emerges. After 15-17 days of seedling age. Can also be direct broadcast, do not soak seeds to promote budding. Before soil preparation and planting cultivated land, 2500 kg of rotten farm manure, 25 kg of potassium sulfate compound fertilizer, 20 kg of potassium sulfate and deep ploughing fine rake should be applied every 667m2. Then ridging, ridge width of 80 cm (including trench), ridge height of 12 cm to 15 cm, made into the back of a tortoise. One row is planted with a row spacing of 2.5 to 3 meters and a plant spacing of 0.5 meters. Colonization should be carried out after 5 pm or on a cloudy day. Water was watered once after planting or direct seeding to facilitate seedling retardation or emergence. The method of artificial pollination in field management is to pick a blooming male flower, remove the petals and put it directly on the female flower, so that the pollen falls on the female flower stigma by itself; or the stamens removed from the petals are gently smeared on the female flower stigma, which can also achieve the purpose of artificial pollination. In addition, when 3-4 true leaves of pumpkin were grown, 2500-fold ethephon diluent was sprayed to promote early blooming of female flowers and early fruiting of young melons. Fertilizer and water management can top fertilize the second melon after sitting according to the growth of the vine. The main pests of autumn pumpkin are aphids, thrips, melon silk borer, leaf miner and so on. When aphids, thrips and spider mites occur, you can use 2000 times of the liquid of 10% great heroes or 2000 times of poisonous scorpions. The leafminer can be controlled with 1000-fold solution of 10% lesiomide. The melon silk borer was sprayed with 5% fipronil 20 ml and 25 kg water every 667 square meters. Virus diseases can be sterilized into 800 to 1000 times plus 20% virus An into 300 times solution.