Detailed Explanation of Key Points for Open-Field Cultivation Techniques of Pumpkin
1. Variety selection and seed treatment: Chinese pumpkin cultivars must be used, with local superior landraces being preferred, such as Huangpiao pumpkin, Mopan pumpkin, pillow pumpkin and long-handled pumpkin, etc. After the pumpkin seeds are sun-dried for 1-2 days, scald them in 50°C warm water for 5-10 minutes, then soak and sprout them. 2. Fertilization and land preparation: With...
1. Variety selection and seed treatment: Chinese pumpkin cultivars must be used, with local superior landraces being preferred, such as Huangpiao pumpkin, Mopan pumpkin, pillow pumpkin and long-handled pumpkin, etc. After the pumpkin seeds are sun-dried for 1-2 days, scald them in 50°C warm water for 5-10 minutes, then soak and sprout them.
2. Fertilization and land preparation: Sandy loam soil with good water and fertilizer retention is preferred. Deep plow and sun the soil clods, apply sufficient base fertilizer, then make flat beds 1-1.5 m wide. On the bed surface, punch holes at a spacing of 10 cm, or open drilled rows at a row spacing of 15-20 cm.
3. Sowing period and sowing method: From mid-April to the end of August, sow in batches at staggered times. Sow the sprouted seeds at 2-3 seeds per hole, or sow in rows at a spacing of 3-4 cm. After sowing, water thoroughly and cover with 2 cm of nutrient soil.
4. Management and harvesting: The key focus of seedling-stage management is ensuring an adequate supply of fertilizer and water. When the seedlings are about 40 cm tall and have 5-6 true leaves, harvest in batches. They can be pulled up with the roots, the old root stems cut off, then tied into bundles for market; or 1-2 true leaves can be left at the base, and the tender seedlings cut off and tied into bundles for market. Then apply a heavy nitrogen fertilizer to promote the sprouting of axillary buds. When the axillary bud seedlings grow to 40 cm, they can be harvested again. Repeat harvesting in this way multiple times. Spraying an 80 mg/kg gibberellin solution 5-7 days before harvest can significantly increase yield and improve quality.