The intercropping of potato with grain, cotton and vegetable crops can greatly improve light energy and land utilization, and increase the economic benefits per unit area. The intercropping of potato intercropping should pay attention to the following points:
First, the variety should be suitable: the second season for intercropping potato should be selected early-maturing swollen varieties, spring potato cultivation using mulching, to shorten the symbiotic period with other crops as much as possible, to alleviate water, fertilizer and cultivation management during the symbiosis of the two crops, etc. contradiction.
Second, choose the right cultivation method:
1. Intercropping between potato and corn. In order to solve the problem of corn shading, two to two planting methods can be used, namely two rows of potato and corn. The row spacing is 30 centimeters, each one hundred and twenty centimeters wide, and the potato plant spacing is twenty centimeters. The density of potatoes and corn is 3,700 plants per mu. For high-stalked corn, three-to-two planting methods can be used, that is, three rows of corn and two rows of potatoes. The row spacing of the corn is forty centimeters, the plant spacing is thirty centimeters, the row spacing of the potatoes is sixty centimeters, the plant spacing is twenty centimeters, and the row spacing of potatoes and corn is thirty centimeters. Each width is 200 centimeters, and the density of potatoes and corn is 3,333 plants per mu.
2, potato and cotton intercropping, generally potato is about a month earlier than cotton, the symbiotic period is short, is a good match, to use two to two cultivation methods, potato line spacing of sixty centimeters, plant spacing of twenty centimeters, potato and The distance between the cotton is forty centimeters, each one hundred and eighty centimeters wide, and the potato and cotton density is three thousand seven hundred and seven hundred per acre.
Third, the spring cultivation attention to resolve the contradiction of water demand. Potatoes are colder than other crops, planting earlier than other crops, and need to be watered 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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