First, choose a good seed potato. Seed potatoes generally use wide-adaptability, strong resistance, short growth period, high yield, good quality, good taste of potato varieties, such as Dongnong 303, Kexin 4, and so on. Second, the appropriate sowing. Appropriate sowing of autumn potatoes is the basis for high yields. The planting was too early, the temperature was high, the plant's disease resistance was poor, the sowing was too late, the growth was insufficient, and the yield was not high. Our province is generally sown in late August. Third, germination. Since the seed potato is a potato block after the harvest of the spring potato, a cold bed should be used for germination before planting. The selected potato block is cut into 2 or 3 small potato chips, washed with clean well water, thinly spread in a cool and ventilated place for 1 to 2 days, and the germination is carried out after the incision is healed. Using fine sandy soil as a germination bed, the seed potatoes are evenly discharged on the germination bed. The buds are upwards, and it is advisable not to contact each other. Then a thin layer of fine soil is used as a barrier on the tuber, and up to three layers can be placed. The top layer is covered with moist fine soil (with no seed potato as a suitable cover), and then covered with a layer of wet straw to keep the germination bed cool and moist to facilitate sprouting. After 7 to 10 days, the potato shoots are taken to a length of 2 cm and removed and placed in a cool place for broadcast. Fourth, rational dense planting. Proper and close planting is the key technology to win high potato yield. Vegetable-type autumn potato is generally harvested and marketed as fresh potato chips. The growth period is short. Before planting, do sorghum and increase soil layers to promote the growth and development of the tubers. The sulcus is 1.2 meters wide, and each row is planted with 2 rows. The spacing is 50 centimeters and the spacing is 18 to 20 centimeters. Fifth, scientific fertilization. Should apply enough basal fertilizer, early application Miao Fei, increase phosphorus, potash fertilizer, at the same time to do deep-rooted basal fertilizer. Fertilizer should pay attention to organic fertilizers and fertilizers can not be in direct contact with potato sprouts to prevent rotting. General Mu Shishu shed pig manure 1500 kilograms, phosphate 30 kilograms, potash 10 kilograms, open a deep hole. In the flowering stage, phosphorus and potassium fertilizers are topdressed depending on the growth conditions. Sixth, strengthen management. After the emergence of seedlings, timely cultivating loose soil, weeding and fertilizing, draining the gutters, etc. should be done in time; the soil pests, leafhoppers, and aphids should be prevented from occurring during the seedling stage; virus diseases and ring rot should be controlled at a later stage. When the potato begins to bloom and grow potatoes, it is necessary to stop the cultivator, clear the ditch, and promote the development of large potatoes.
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