What should be paid attention to in growing potatoes for high yield?

What should be paid attention to in growing potatoes for high yield? Netizens who have experience in potato cultivation are also invited to introduce potatoes in detail, commonly known as yam eggs, which is a dual-purpose crop of vegetables, grain and feed. In order to obtain high yield, it is necessary to choose excellent varieties, suitable farming methods, balanced fertilization and strengthen management, so the planting network has sorted out the key points that need to be paid attention to in planting potatoes, which are listed in detail below for netizens' reference. First, the selection of planting land and soil preparation: planting potatoes should choose deep, loose, fertile sandy loam, requiring deep ploughing in early autumn, deep ploughing 7-8 inches. This can not only eliminate weeds, reduce the harm of diseases and insect pests, and store more natural precipitation, but also facilitate the development of potato root system and the formation and expansion of stem mass. Second, the treatment of seed potato: the seed potato should come out of the cellar 15-20 days before sowing and sprout under the condition of keeping 15-18 degrees in the cellar. After 10-15 days, when most of the bud eyes of the seed potato germinate to the size of the matchhead and put them outside to the leeward to dry the seeds, the drying time is usually 7 days. Third, the sowing time and density of potato: when the local temperature reaches 8-10 degrees, the number of seedlings per mu of late-maturing varieties is about 4000, and that of early-maturing varieties is about 4500 per mu. For example, the corresponding number of plants per mu dominated by commercial potato production should be less. For example, the number of plants per mu dominated by seed potato sales should be appropriately larger. Fourth, fertilization of potatoes: when sowing, ditch or hole sowing high-quality farm manure of more than 3000 kg per mu, deep application of compound fertilizer 25-50 kg as base fertilizer, do not come into contact with seed potatoes to prevent burning seed potatoes and affect seedling emergence. Fifth, the management of potato florescence: it must be checked twice at bud stage and full flowering stage, and it is found that degraded and miscellaneous plants must be pulled out and buried deeply together with potato pieces to prevent virus disease infection and lead to aging, so as to ensure the quality of seed potato and high quality seed potato. What is the method of slicing and sprouting virus-free potatoes