Potato cultivation technology

First, the selection of seed: for I the town of Potato varieties grown are: Favorita (Netherlands seventh and fifteenth Netherlands), Lu cited One, Tianjin cited 八号 (8TA), 303 East farmers, etc. both for open field planting can be protected cultivation, is currently a better early maturing variety, tuber concentrate, potato, high yield, good commodity.

Second, cut germination: germination sowing is an effective stimulation, make potato seedlings Qi, Miao full, Miao, Zhuang, increase production. Germination 15-20 days before planting, generally can be cut kg seed 50, each cut at least one bud eye, block weight 25 grams; make full use of the top edge cut, as far as possible with the terminal bud to ensure emergence uniformity, with particular attention to removing the potato hybrid or disease. After the cuts healed incision dry it, under the conditions of the heap at 15-20 ℃ germination or on the sunny leeward Yang Qi in germination, the general per square meter is about 50 kg can be laminated, plastic film cover to facilitate warming moisture, increase in light during the day night stamped grass thatch.

Third, timely sowing: when the air temperature by 7 ℃ (usually in early March) to seed. My town of suitable sowing period: mulching for the "Awakening of Insects," 7-8 days before; film layer covering Shed the "rain" before and after; Double Shed in advance in the "spring" before and after planting. Insufficient soil moisture, soil moisture before sowing to be made. General planting density of 4800 trees / acre (70 × 20cm) or 5000 plants / acre (65 × 20cm), protection should be close to some of the morning market, night market makers can be exposed to more dilute. Seeding method is based spaced trenching the ground, with facilities kinds of fertilizer, after the casing from the ridge sowing, sowing depth of about 8cm, cut from the ridge top 12-17cm, casing too shallow, bluish exposed tuber will affect the quality; casing off delay the emergence of deep, affecting production. Protected cultivation, shall be stamped in the planting day cover, compression seals; large, medium and small shed covered, should be added in the shelf surface lamination line and ready air, ventilation, fertilization and watering. Mulching who earth from the ridge after sowing, the brush flat ridge surface, spraying herbicides, and Gai Demo.

Fourth, rational fertilization: hi fat potato crop is high, reflecting very sensitive to fertilizer. Production of 1,000 kg of tubers to absorb nitrogen from the soil to be 5 kg, 2 kg of phosphorus, potassium, 10 kg, three ratio 1:0.5:1.5, potassium can enhance plant resistance to disease, to promote tuber expanding. Fertilization should be based on organic fertilizer (manure mixed soil) as basal fertilizer, both to improve soil and can be absorbed and used continuously for potatoes. 5,000 pounds per acre applied over the general quality organic fertilizer, organic fertilizer, if low, can be applied at planting time in the planting trench, while 100 pounds or more facilities into high-quality fertilizer, chemical fertilizer applied when the potassium chloride to avoid. Early maturing varieties should not be dressing should be applied at planting time when the foot.

Fifth, field management: 1, emergence of the former: loose soil, increasing temperature, promote early emergence. This was neither protected ventilation, watering is not top-dressing, the focus is to increase the light, to prevent wind, snow, rain weather damage to the Shed. 2, the seedling stage: mulching, and they should promptly artificial rupture of membranes; exposed to growers, after rain or watering time program hoe, breaking the hard shell, so that a smooth excavated seedlings, promote Qi Miao, Miao full, Miao Zhuang. Seedling watering depends on soil moisture content may be, a good time to water the soil moisture, reduce soil temperature to avoid. 3, fat trees of: potato out Qimiao, the main goal is to promote the growth of seedling trees robust, setting up the yield shelf. Management point is not dry without water, water not overflow when the ridge top, and the cultivators, earth, and finally closed in the rosette large ridge ridge shoulder before training prescription to create a good tuber conditions. When the need not to damage earth functional leaves, Quefei the timely topdressing, fertilizing can also be washed with water facilities. Large, medium and low tunnel ventilation to gradually increase the time to "Grain Rain", the weather can be removed as the protection of facilities. 4, the tuber of: potato rosette bud immediately started tuber, to the flowering stage, the rapid expansion of potato fast, and you should increase the water volume, if not even the pouring rain should Sanshui, each interval of 5-7 days of water should be poured small water and avoid floods diffuse ridge. Watering principle is to keep the soil moist, water can not cause the field. The prevention and control of pests and diseases should also be noted, particularly potato blight, should be based on early prevention, to prevent the main, once the disease is difficult to control. In the meantime if there is leggy plant phenomenon, to the artificial control, can be sprayed 1-2 times MET (PP33), converted concentration 100PPm. 5, Harvest: 7-10 days before harvest potatoes should stop watering. ① large, medium and small Shed listed earlier, can serves decent price. According to the market price of our city and the yield efficiency of harvest time is "May Day" post before the holiday. ② open field cultivation, and should be allowed to fully come a long way, the formation of higher yields and better specifications of the potato to achieve better efficiency, time of harvest in early June.