In the second cropping season, intercropping potatoes should be selected as early-stage virus-free varieties, and the cultivation of spring potatoes should be covered with plastic film to shorten the symbiosis period with other crops as much as possible, and to alleviate the contradiction between water, fertilizer, cultivation and management during the symbiosis of the two crops.
For intercropping potato and corn, a 2:2 planting method can be used to solve the corn shading problem. Two rows of potatoes and two rows of corn are used. The row spacing is 30 cm, each is 120 cm wide, the potato spacing is 20 cm, and the density of potato and corn is 3700 acres. For high stalked corn, a 3:2 planting method is available, ie, three rows of corn and two rows of potatoes, corn spacing 40 cm, plant spacing 30 cm, potato spacing 60 cm, plant spacing 20 cm, potato and corn spacing 30 cm, each width 200 cm, the density of potato and corn is 3333 per mu.
Intercropping potatoes with cotton. Generally, potatoes are sowed about one month earlier than cotton, and their commensal period is short. It is a good collocation. It is advisable to use a 2:2 cultivation method. The potato spacing is 60 cm and the spacing between plants is 20 cm. Between potato and cotton The distance is 40 centimeters, each width is 180 centimeters, and the density of potato and cotton is 3,700 plants per mu.
Compared with other crops, potato is cold-tolerant and sown earlier than other crops. It needs to be watered after emergence, so that early watering of potatoes will reduce the soil temperature and affect the emergence and seedling growth of cotton, corn and other crops. Therefore, when it is necessary to water, it should be Water between two rows of potatoes.
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