Cultivation techniques of pumpkin in open field

The main results are as follows: 1. Chinese pumpkin must be selected for variety selection and seed treatment, and the excellent local varieties are the best, such as yellow ladle pumpkin, grinding plate pumpkin, pillow pumpkin and long-stalked pumpkin. After 1-2 days of drying, pumpkin seeds were scalded with 50 ℃ warm water for 5-10 minutes, and then soaked to accelerate germination. 2. The sandy loam soil with water and fertilizer conservation is the best for fertilization and soil preparation. After deep ploughing and application of basic fertilizer, a flat bed with a width of 1-1.5 meters was made, and the border surface was burrowed according to the hole spacing of 10 cm or the row spacing of 15-20 cm. 3. Sowing time and sowing methods from the middle of April to the end of August, the seeds were sowed in batches, and the budding seeds were sowed according to 2-3 seeds in each hole, or 3-4 cm apart. Water thoroughly after sowing and cover 2 cm thick nutritious soil. 4. The focus of management and harvest management at seedling stage is to ensure adequate supply of fertilizer and water. The seedlings are about 40 cm high and are harvested in batches with 5-6 true leaves. You can pull up the roots, cut off the old roots and put them on the market, or you can leave 1 or 2 real leaves from the base and cut off the tender seedlings to put them on the market. Then heavy application of nitrogen fertilizer to promote the germination of axillary buds, when the axillary bud seedlings grow to 40 cm, can be harvested. So repeatedly harvested many times. Spraying 80 mg / kg gibberellin solution 5-7 days before harvest could significantly increase the yield and improve the quality.