Potatoes are both food and vegetable. By carrying out high-yield creation activities and improving and integrating early-maturing, high-yield and high-efficient cultivation techniques for potatoes, we can improve the quality, increase production, meet market demand, and steadily increase farmers' income.
Technical points:
1. Use good seed, seed potatoes virus free. According to the climate characteristics of Wen'an County, early-maturing varieties with early potato tuber, fast tuber enlargement, short dormancy period, high yield, high quality, and disease resistance are selected, such as the Dutch, No.15, Luyin, and Dutch7. Detoxification G2, G3 varieties.
2. Cut and germinate to ensure full seedlings. Cut germination requires about 150 kg of seeded potatoes per acre. 20 to 25 days before sowing, the seed potatoes are placed in a warm and sunny place for 2 to 3 days, and diseased potatoes and rotten potatoes are removed, and then cut into pieces. When cutting, make full use of the apical dominance, spiral to the top of the beveled, and finally according to the top bud is divided into two or divided into four, each piece of potato retains 1 ~ 2 bud eyes, weighing 25 to 30 grams. After drying the blade, put it in a room with a temperature of 18 to 20°C. Use a stratification method to accumulate germination. When the length of the shoot is about 2 cm, place it under scattered light and dry it.
3. Chemical seed dressing, pest control and disease prevention. Add 50 grams of prohexine 50% suspension agent and 20 ml of high-suspended 60% suspension seed coating agent into 1 litre of water and spray it onto 100 kilograms of seed potato chips. After drying, sow to prevent plant diseases and insect pests. Guarantee Miao Qi, Miao Zhuang.
4. Double membrane coverage, timely sowing. Generally, in the sunny days from late January to early February, single row and double row rows are planted in the large arch shed. The use of a small arch shed in a large arch shed can further mention the morning market. The ridge distance is 80 centimeters, double rows, 25 to 30 centimeters of plant spacing, and 5,500 to 6,000 plants per mu. When planting ditch deep 8 to 10 cm, 20 cm wide. Fertilizers and pesticides to prevent and control underground pests are mixed with soil. After watering, they are planted at oblique angles. The buds are upward. The buds are covered with a small amount of fine soil. Then the soil is ridiculed. The ridges are about 15 cm high and the ridges are ridged. Flat, spray herbicide, and then covered with a 90 cm wide film.
5. Soil testing formula, balanced nutrition. Adopt soil testing and formula fertilization techniques and formulate fertilization plans based on the target yield. Generally, 5000 kg of soil-fertilizer or 150 kg of commercial organic fertilizer, 180 kg of ternary compound fertilizer (15-10-20 or 15-12-18), 1.2 kg of zinc sulfate, and 1 kg of boric acid are applied per mu. Soil miscellaneous fertilizers are spread on cultivated land, and other fertilizers are applied at the time of sowing.
6. Strengthen field management. After planting, keep it at 20～26°C during the day and 12～14°C at night. The water was poured 3 times in Qimiao, Tuanshi and Leilei. When the plant height is between 40 and 50 cm, 20 ml of auxiliaries or 15 grams of paclobutrazol can be sprayed in order to prevent leggy.
7. Comprehensive prevention and control of pests and diseases. The late phase focuses on the prevention and control of late blight, starting from the beginning of the regimental period and spraying once every 7 days to control late blight. Immediately after the diseased plant was found, the diseased plant was removed, buried deep away from the field, and lime was sprayed around.
8. Timely harvesting, grading and packaging. Combine with the market conditions timely harvest, grading, packaging sales, increase revenue.
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