Rootstock pumpkin high-yield cultivation technique

Pumpkin high-yield cultivation techniques:

1. Cultivate strong seedlings

The root system of pumpkin is developed, and the requirements for soil conditions are not high. It is suitable to cultivate in loam and sandy loam with better permeability, and generally use a nutrient bowl to raise seedlings. Open field cultivation is sown from late March to early April, with a seedling period of 20 to 25 days and transplanted in late April. Facility cultivation is sown in mid to late February. Promote germination before sowing, soak seeds in 25-30℃ water for 6-8 hours, remove and scrub, put in 25-30℃ germination box to germinate. After the seeds are exposed, the temperature should be controlled below 25℃, generally 24～36 hours. Qi buds. After arranging the nutrient soil and pouring water, it can be sown, sow 1 grain per pot, then cover the fine soil with a thickness of about 1 cm, and lay a layer of film on the nutrient bowl to moisturize and increase the temperature to promote emergence. Remove the film in time after emergence, and at the same time, do a good job in the prevention and control of plant diseases and insect pests to ensure the breeding of strong seedlings.

2. Reasonable close planting scientific fertilization

The planting density is determined according to the characteristics of the variety and the cultivation mode. Generally, about 800 plants per mu are planted in a greenhouse under scaffolding, and about 500 plants per mu are planted in open field. Apply 100 kg of organic fertilizer per mu and 35 kg of compound fertilizer as base fertilizer, strictly control nitrogen fertilizer and watering during flowering and fruit setting period; after sitting melon (egg size), combined with shallow water in the ditch, apply 15 kg of compound fertilizer per mu and 5-8 kg of urea .

3. Field management

(1)Pruning

The purpose of pruning is to balance the relationship between the results and the long leaves. Pumpkins with strong nitrogen fertilization have strong branching ability. If they are allowed to grow, the branches and leaves will flourish and the growth will be delayed. In the 3 to 4 leaf stage, topping and topping are promoted to promote branching. Generally, single-vine or double-vine pruning is used for greenhouse cultivation, and open-field cultivation is generally 3 or 4 vines per plant*. No matter which vine retention method is used, the side branches that reappear on the vine left in front of the sitting melon should be removed in time to avoid affecting the sitting vine.

(2) Pollination

Usually leave the second or third female flower on the main vine, and the first or second female flower on the side vine. The number of fruit retention is related to the characteristics of the variety. Generally, there are 5 to 7 fruit per tree rootstock. When the remaining female flowers appear, pick up the blooming male flowers in the morning, remove the petals, and gently apply them to the stigmas of the blooming female flowers for artificial pollination.

4. Harvest

Rootstock pumpkins harvest old ripe melons, generally 60 days after the flowers are spent, they are harvested after they are fully ripe, the nails are not scratched, and the skin color turns yellow to ensure that the seeds are fully ripe.

Pest Control:

The rootstock pumpkin diseases mainly include powdery mildew, mosaic virus disease and horn spot disease. In the early stage of powdery mildew, 62% Wison 1000 times solution, thiophanate-methyl, chlorothalonil, etc. can be used for prevention and treatment. Mosaic virus disease often causes pumpkins and melons, or even a failure, mainly from cultivating strong seedlings and improving their resistance, while spraying 20% ​​virus A500 times solution or Jianzhibao 500 times solution for prevention and treatment. Angular spot disease can be controlled by mancozeb and carbendazim. Insect pests mainly include aphids and red spiders. Aphids can be controlled with 50% anti-aphid 1500 times solution, and red spiders can be sprayed with 38% Pfaff 800-1000 times solution or insect mite rick times 1500 times solution.

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