High-yielding Cultivation Techniques of Potato in Greenhouse
Variety selection use early maturity, high yield, high quality Lu Yin 1 virus-free potato varieties. The variety is concentrated in potato, uniform in size; the potato block is oval-shaped, yellow-yellow-yellow meat, smooth skin, shallow buds; storage-resistant, high anti-wrinkle mosaic virus disease, rolling leaf virus disease resistance, more resistant to scab; general yield per acre It is 3,000 kg. With planting varieties such as early Dabai, Dongnong 303, the Netherlands 15, Zhongshu No. 3 and so on.
Planting suitable greenhouses covered with small double-arch covered with double film covering, seed germination in mid-December to cut germination, transplanting in mid-January, harvesting in late March to early April; covering plastic film in greenhouse, seed potato in early January The cuttings were germinated and transplanted from late January to early February. They were marketed after mid-April. The greenhouses were not covered with plastic film. Seed germinated in mid-January and transplanted in early February. Harvested in early May.
Seed germination generally will be 15 to 20 days before sowing will seed potato cut into pieces, each potato weight about 30 grams, with 1 bud eyes, about 140 kg per acre with seed potato. After the potato chips are chopped, the ash is smashed, dried and placed on a semi-subterranean nursery bed in a sheltered sunny place. The seedbed needs 15m2 per mu. A layer of wet soil was placed on the seedbed and the tubers were placed flat on the wet soil. After the pendulum was placed, 3 cm thick wet soil was placed and a thin layer of straw or wheat straw was covered. The seedlings were placed on a small shed to incubate the heat and germinate the seedlings in the evening. When buds grow 1.5 to 2 centimeters, the buds are turned so that the shoots without buds continue to bud, and the buds are transplanted when they are green. Ridge planting, ridge width 90 cm, height 30 cm, 2 rows per ridge, hole spacing 25 cm, hole depth of 8 to 10 cm, planted around 5000 per acre. Put the shoots sideways when transplanting, in order to facilitate the taking root and potato. After the planting, the soil shall be timely covered with 50% acetochlor 150ml per mu or Shi Tianbu 100ml water 45kg spray to close the weeding, and then the shed film shall be used.
Rational fertilization and fertilization are mainly based on basal fertilizers. Generally, 3,000-5,000 kilograms of soil-fertilizer per mu, 20-25 kilograms of diammonium phosphate, and 40 kilograms of 50% potassium sulfate are applied. Combining basal fertilizer with 1 to 2 kg of soil to sterilize the king, 1 to 2 kg of bacillus, and 2 kg of 5% phoxim granules to control pests and diseases.
Field management is generally 20 days after transplanting Qimiao, Qimiao pay attention to ventilation and humidity, timely fertilizer and watering, pest control and weed control. 15 days after the seedlings were topdressed, 0.5 ~ 1 kg of urea or 500 g of potassium dihydrogen phosphate per acre was sprayed with water every 20 days. Tubers were earth-pulverized twice during the expansion period to prevent potato chips from growing green outside the soil. Due to seedlings pouring water for 2 times, the first water was poured 20 days after the seedlings were injected, and the second water was poured during the bud enlargement period. Pay attention to potato late blight and ladybugs.
Timely harvested 20 days after flowering, when the weight of potato chips was 150 grams, the harvested large pieces of potatoes were sold, leaving small potato chips to continue to grow.
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