2. Pumpkin planting: seedling raising in nutrient bowl. Pumpkin seedling can be raised by direct seeding in field and nutrition bowl. Seedling raising in direct seeding field is easy to be limited and influenced by weather conditions, especially in drought and flood weather, so seedling raising in nutrition bowl has been gradually popularized in recent years. Before sowing, the seeds should be pretreated, and the selected seeds should be 1 times. The floating seeds and rotten seeds should be cleaned and removed at the same time. The seeds should be soaked in 50% carbendazim 200 times solution for disinfection, and the seeds can be sown after 48 hours.
3. In order to provide rich nutrition for seed growth, 20% of livestock manure, 30%~40% of plant ash and 40%~50% of sandy loam can be used to prepare nutrient soil. From March to April, when the temperature and humidity are suitable, you can sow. Immediately after sowing, put the nutrient bowl into the seedbed and spray water in time to keep the humidity of the seedbed and nutrient soil.
4. The propagation of tuberous roots is generally carried out in spring. From mid-March to mid-April, the robust female root of 1 ~ 3 years old can be dug out, cut into small pieces of 7~250px, and dipped in plant ash to prevent root rot. According to the plant spacing of 5 m× 6 m, seeds can be sown in the field after emergence.
5. Guagua planting: scaffolding for transplanting. Before transplanting, in order to ensure the climbing vines and fruit hanging of hanging melons, scaffolding should be set up. Generally, a hole of 5m×6m is dug and a cement column with a depth of 50~ 1750px is buried. Scaffolds should be woven into a net with steel wire, and each main column should be connected with nylon rope net with enlarged holes. In order to increase the wind resistance of the scaffold, the cement column should be connected and fastened with thick steel wire at the upper end of the cement column, and protective piles should be added around the scaffold, and the scaffold should be pulled with steel wire. After the main frame is pulled, the top should be enlarged with nylon mesh.
6. When transplanting with tuberous roots, pay attention to make axillary buds face up. In order to promote the root tuber to sprout, after transplanting, the mud should be slightly pressed, and then a pier should be erected on it. Seedling transplanting is generally carried out in early May, and the density is about 1650 plants /hm2. After transplanting in two ways, it is necessary to water 1 time to increase soil moisture and ensure the emergence of root tuber and the survival of seedlings.
7. Pumpkin planting: seedling management. When the height of pumpkin seedlings reaches 500px, intertillage weeding and topdressing should be carried out. The newly planted melon orchard has sufficient base fertilizer. Generally, topdressing urea is 45~75kg/hm2 when the seedling length reaches 1.5m, and then topdressing compound fertilizer 1 time every month from May to July. The melon orchard that has been produced in the previous year should be topdressing twice at seedling stage. When the height of pumpkin seedlings reaches 750px, topdressing 1 time, cake fertilizer 600kg/hm2, urea 150kg/hm2 compost, and watering 1 time after fertilization.
In the middle of August and June, in order to facilitate fruit setting and provide sufficient nutrition for the fruit, the second topdressing should be carried out, and the fertilization amount should be greater than 1 time. When the seedling height reaches 750px, it is also necessary to guide the hanging melon vines to the frame in time, and guide the main vine head in one direction, which is conducive to uniform fruit setting. Some tuberous roots have strong germination ability and many sprouting branches and vines, which can be pruned when leading vines, leaving 2~3 vines. When the main vine grows to 3m, topping will promote new branches.
9. Pumpkin planting: flower and fruit management. Pumpkin is a dioecious plant. When planting, several male plants should be planted at the edge of melon orchard, generally 30~45 plants /hm2. At flowering stage, in order to improve the fruit setting rate, artificial pollination should be done carefully. At about eight o'clock every day, you should dip the male pollen with a brush and give it to the stigma of the female flower one by one. 1 male flowers can be pollinated 10~ 15 female flowers. The key point of fruit management is to improve the fruit setting rate of hanging melons, and the measures of spraying Zhuangguadiling can be taken to improve the yield of hanging melons.
10, when the temperature is high in the middle and late July, it is necessary to fully replenish water. For melon orchards with particularly vigorous growth, thin vines should be thinned to avoid competing with the main vines for nutrition. In August, if the last batch of melons have set fruit, you can remove the top of all the warped vines, remove the new long lateral buds and buds, and ensure the nutrition of fruit setting.