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　　 Potato and corn intercropping, in order to solve the problem of corn shading, 2:2 planting method, that is, two rows of potato and corn, the row spacing is 30 cm, each 120 cm wide, the potato plant spacing is 20 cm, and the potato and corn density is per mu. 3700 strains. For high-stalk corn, 3:2 planting method can be used, that is, three rows of corn and two rows of potatoes, corn row spacing 40 cm, plant spacing 30 cm, potato row spacing 60 cm, plant spacing 20 cm, potato and corn row spacing 30 cm, each width 200 cm, potato and corn density is 3,333 plants per acre.
Potato and cotton intercropping, generally potato is about one month earlier than cotton, and the symbiotic period is short. It is a good match. It is suitable to adopt 2:2 cultivation method. The potato row spacing is 60 cm, the plant spacing is 20 cm, and between potato and cotton. The distance is 40 cm, each is 180 cm wide, and the density of potatoes and cotton is 3,700 per acre.
Potatoes are more cold-tolerant than others, sowing earlier than Other crops, watering after emergence, so that pre-watering of potatoes will reduce soil temperature and affect the emergence and seedling growth of cotton, corn and other crops. Therefore, when watering must be done, Small water is poured between the two rows of potatoes.
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