The land where the breeding or transplanting is to be carried out must be a land that has not been planted with potatoes for more than 3 years. Breeding and selecting potatoes by buds: The original or original species harvested in the previous year was carefully selected, and potato chips weighing about 100 grams and equal in size were selected to remove deformed and deformed potato pieces. Germination: The selected potato chips are spread on the ground in a nylon net shed, germinated and dried for 10 to 15 days. When the surface of the seed potato becomes soft and the top buds grow to the size of the soybeans, the planting potato shoots are grown. Breeding bud bed: bed width 1 meter, 2.5 meters long, 0.3 meters deep. The fresh donkey horse dung is repeatedly filtered to reach fine crushing and then spread into the clams. The thickness is up to 0.2 m. Stepping on solids and irrigating the water, the degree of watering can reach the surface of the fertilizer, and the water around the feet is suitable for extrusion. Timely stamped plastic small shed, covered with plastic film seal, in the greenhouse 25 ~ 35 °C let it fully decomposed a week is appropriate. Planting potatoes: first spread 3 cm thick fine fluvo-aquic soil on the surface of the bed, then put the selected and germinated seed potatoes into the bed, the umbilicals of tubers are downwards, the tops are upwards, and they are tilted from north to south. Potatoes are separated by about 4 cm. Then the surface of the seed potato is sprinkled with 3 cm of fine sand and rich soil, and the top is smoothed. If the top soil layer appears dry, spray it properly to moisten the topsoil, and then cover the plastic film to incubate and incubate. . On May 23, planting potato shoots were planted. The first axillary buds were carried out on June 10, the first germination period was 18 days, and the second germination period was 12 days. Transplanting for crops: in the nylon net room for the formation of lotus root, lotus root width of 1 meter, Shizu base fertilizer, applied per acre high quality manure fertilizer 3000 kilograms, ammonium nitrate 40 kilograms, once into. Transplanting axillary buds: When the buds of seed germinating buds grow to 3 to 4.5 cm in length and are thick, with a root length of about 9 cm and a large number of fibrous roots, they can be transplanted.
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