Flat electric hotbed nursery: suitable for breeding units or improved seed breeding bases. In order to speed up the adoption of new materials and new varieties, the time for making beds and planting depends on needs. In order to save energy, the planting density can be appropriately increased in the early stage. It is characterized by breeding seedlings as soon as they are available, and keeping the temperature in winter and early spring.

Film-covered flat bed nursery: suitable for planting and transplanting big seedlings and spring potatoes. The seedlings in electric hotbed and warm kang seedbed grow earlier, and the temperature is lower in early spring, so they can't be planted directly in the field. The width of the boundary is about 1.5m, and the length depends on the land conditions. The planting density is generally 15cm, and the spacing between plants is 5cm. When picking and transplanting, cover the soil after watering line by line, and it is not easy to return to seedlings after flooding.

Seedling raising of summer potato in the open field is an important measure to cultivate the whole seedling of summer potato. On the one hand, it can supply seedlings for summer potato planting and transplanting in time to avoid seedling breakage in spring potato field; Second, the spread of diseases can be effectively reduced after two times of high-shearing seedlings. Nursery can use flat beds or small ridges. The row spacing of flat border planting is about 20 cm, and the plant spacing is about 5 cm. The ridge spacing of the small ridge is about 50 cm, and the plant spacing is about 10 cm. The open-field nursery of summer potato can be used as a green feed field after the planting and transplanting of summer potato is completed.