Seedlings are selected for dry land with good light and fertilizer, and seedling beds are placed in the dry land. The seedlings are placed at a rate of 15 kg/m2, and the field cultivation requires 50 kg of seed potatoes per 667 m2. Pour sufficient water, the bed temperature is maintained at 30 ° C ~ 35 ° C, more than 35 ° C to uncover the film and cool down, in case of low temperature weather, sealing film insulation. After the Miao Qi, look at the seedlings and keep the bed moist. 5 to 7 days before the seedlings are cut, the seedlings are started, and the night cover film is exposed. The film is completely exposed 2 to 3 days before the seedlings are cut, and the old potato seedlings are refined.
Before transplanting the field, the disease-free field is selected. When the height of the seedling reaches 0.3 meters, the seedlings can be cut, the cuts should be 2~3 cm away from the bed soil, and the plants should be planted in 3×3 cm in time. seedling.
The mechanical ridged sweet potato is ridged and planted, the ridge height is 20~25 cm, the ridge distance is 75~90 cm, the sand soil uses 25 hp, and the clay soil uses the power of 35 hp four-wheel tractor. The ridger can use the 1KQ~30 type sweet potato ridge machine.
Potato seedling transplanting potato seedlings transplanted by oblique insertion, single row planting, seedling distance 25~30 cm. Spring potato 3000~3600 plants/667 square meters; summer potato 3600~4000 plants/667 square meters; autumn potato 4000~5000 plants/667 square meters.
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