1. Use loose and fertile soil, and use semi-sandy loam as good soil. At the same time, choose fields without solanaceae crops. It is best to choose wheat, beans, rape and root crops as the front plots, and the rotation cycle is more than 2 years. After the crops were harvested, the soil deepened and disinfected with pesticides.

2. Excellent varieties are the important premise to ensure high yield of potato, and also the main reason to ensure high quality and improve disease resistance in potato production. Potato seeds should choose potato chips with good varieties, complete, bright color, no pests, no deformity, no frostbite and no bud necrosis.

3. Before sowing10 ~15, put the seed potato in the sunny place of 15~20℃ to promote germination. When many kinds of potatoes are raised, the diseased, rotten and frostbitten potatoes are removed, and the seeds are dried in the sun, so that they germinate and appear purple. When cutting, each bud has at least 1-2 buds, and the bud weight is about 30 grams. When cutting, we should advocate the method of average buds, make full use of the advantages of terminal buds, and promote the early germination of potato stems. The diced one should be diced, not diced. Cut the bud with some ash or lime powder to promote the early healing of the incision. Cutting 2-3 days before sowing is easy to infect bacteria prematurely; It's too late, the wound hasn't healed, and it's easy to cause rotten seeds after sowing.

4. Adding organic fertilizer and reasonable fertilizer allocation can improve the soil and improve the quality of potatoes. Fertilization is combined with sowing. Seed potatoes are generally applied with organic fertilizer and empty fertilizer. In the germination stage, the application amount of urea was 75~ 150 kg/ha, and potassium dihydrogen phosphate (0.2% ~ 0.3%) and gypsum were sprayed on the leaves for 2~3 times.