Technical points
1. Select good varieties and detoxify the seed potatoes. Early-maturing varieties such as "Netherland 15", "Lu Yin 1", "Netherlands 7" and other early-maturing varieties such as "Netherland 15", "Lu Yin 1", and "Netherlands 7" are selected.
2. Cut into pieces to promote germination to ensure the whole seedlings. Dicing to germinate requires about 150 kg of potatoes per acre. 20-25 days before sowing, the seed potatoes are placed in a warm and sunny place for 2 to 3 days, at the same time, diseased and rotten potatoes are removed, and then cut into pieces. Make full use of the advantages of the top when cutting, spirally cut to the top, and finally divide the top bud into two or four. Each seed potato has 1 to 2 bud eyes and weighs 25 to 30 grams. After drying the knife edge, it is placed in a room with a temperature of 18 ° C ~ 20 ° C to promote budding by lamination. When the buds grow to about 2 cm, they are dried under scattered light, and the buds are greened and thickened before seeding.
3. Medicinal dressing to prevent insects and diseases. Add 50 grams of puhein 50% suspending agent mixed with high Qiao 60% suspension seed coating agent 20ml to 1 liter of water, shake and evenly, spray it on 100 kg seed potato cuts, and seed after drying to prevent seedling diseases and insect pests. Ensure Miao Qi, Miao Zhuang.
4. Double or triple film covering, sowing in time. Generally, single-ridge and double-row planting is carried out in large arch sheds on sunny mornings from late January to early February. The use of large arch sheds and small arch sheds can further improve the morning market. The ridge distance is 80 cm, the double-rows are planted, the plant spacing is 25-30 cm, and the acres are planted with 5500-6000 plants. When planting, the ditch was 8-10 cm deep and 20 cm wide. Fertilize fertilizers and control pesticides for underground pests, mix well with the soil, water the plants at an oblique angle, shoot upwards, cover the buds with a small amount of fine soil, and then cover the soil with ridges. The ridge height is about 15 cm. Flat, spray with herbicide and cover with 90 cm wide mulch.
5. Soil testing formula, balanced nutrition. The soil fertilization technology is adopted to formulate a fertilization plan based on the target yield. Generally, 5000 kilograms of soil fertilizer or 150 kilograms of commercial organic fertilizer, 150 kilograms of nitrogen, phosphorus, and potassium ternary compound fertilizer (15-10-20), 1.2 kilograms of zinc sulfate, and 1 kilogram of boric acid are applied per acre. Soil fertilizer is applied when arable land is used, and other fertilizers are applied at the point of sowing.
6. Strengthen field management. After planting, keep 20 ℃ ～ 26 ℃ during the day and 12 ℃ ～ 14 ℃ at night. Water was poured three times in Qimiao, Tuanke and Buddhism periods. When the height of the plant is 40 to 50 cm, spray 20 ml of sclerostin or 15 g of PP333 to prevent excessive growth.
7. Comprehensive control of pests and diseases. In the later period, focus on the prevention and control of late blight, since the group period, spray every 7 days to prevent late blight. Immediately after detecting the diseased plant, remove the diseased plant, bury it away from the field, and spread lime around it.
8. Harvest in time, grade and pack. Combine market conditions with timely harvesting, grading, packaging and sales to increase revenue.
Precautions
Select excellent virus-free varieties according to local market requirements, and pay attention to understanding the production situation at the breeding base when introducing, to avoid the introduction of diseased seed potatoes. After mulching, potatoes should be seeded in time to prevent injury. Harvest in a timely manner according to the market conditions. If the price fluctuates little, it can delay harvesting and increase production.
Suitable promotion area
Northern potato season.
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