A. Wide range of potato 4 rows of ridge corn 2 rows
This model is suitable for the grain area, the potato is cultivated in the spring and autumn, the corn is cultivated in the spring and the second season in summer, and four crops are harvested in one year to achieve the dual harvest of potato and grain. The specific approach is: 2.8 meters wide to one, the spring potato planting line spacing 25 cm 60 cm sowing 4 rows, 3800 per acre planted. Spring maize was planted in rows of 40 cm and 15 cm in diameter with 2 rows of 3,170 per mu. After the spring potato harvested, two rows of summer corn were drilled on the central furrow. After the spring corn was harvested, four rows of autumn potatoes were broadcast between the summer corn line.
This model requires sufficient water and fertilizer conditions, early harvest of early spring potatoes, corn is best to use transplanting methods to ensure consistent growth. As far as possible, the upper and lower jaws of the cultivation process are closely linked, and the management measures are bound together to achieve high yields.
Second, potato 2 ridge corn 2 rows wide range
This method generally takes a wide range of 140 cm, within the range of 60 cm spacing potato, planting 20 cm in 2 lines, 4760 per acre; corn row spacing 40 cm, 30 cm spacing broadcast 2 rows, 3170 per mu. After the potato is harvested, the yam weighs the green manure and cultivates the soil. Then the soil between the big corn rows was flattened. Immediately after the 20-day-old summer maize was transplanted, it was poured with water. After the seedlings survived, the old yellowish leaves of the base of the spring corn plants were removed to enhance the light and strong seedlings. Summer corn harvest after wheat. In the cultivation, the potato should use the early-maturing and short-cultivated varieties, and the seed potatoes should be treated before sowing, so as to sow early, early emergence and early harvest. Spring maize must use late-maturing and high-yield varieties, and summer corn should use early-maturing varieties to strive to harvest before winter wheat.
3. Wide range of potato 2 ridge corn 3 rows
This model is used for corn hybrids. The width of 2.2 meters, the early sowing of potatoes, row spacing 60 cm, spacing of 20 cm, planting 2 rows, 3030 per acre. Corn is planted in rows of 40 cm in a row and 30 cm in spacing, with 3 rows in the middle of the paternity. There are 3,330 per mu. Potatoes were harvested and the yam was pressed with green manure, earthworms were cultivated, and two lines of summer corn were transplanted. After the corn was harvested, wheat was sown.
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