Planting method, soil preparation and fertilization of cold potato 1
When planting cold potatoes, you should choose plots with sunny lee and good ventilation. Before planting, the plots should be plowed, sufficient decomposed organic fertilizer should be added as base fertilizer to improve soil fertility, and furrows and ridges should be dug in the field to provide enough growth space for cold potato seedlings, thus improving the overall yield and quality.
2, sowing and accelerating germination
Before planting cold potatoes, seeds with full grains and unaffected by diseases must be selected to improve the survival rate after sowing. Before sowing, it needs to be soaked in diluted potassium permanganate solution, and then put in an environment of 26℃ to accelerate germination. After 50% of the seeds are exposed, they can be planted directly.
Step 3 sow in the soil
When planting cold potatoes, we should choose the soil with high terrain and loose soil to let the soil better discharge accumulated water. Direct seeding can be used when sowing, and the sowing spacing is 15cm. After sowing, irrigate with small water once and cover with plastic film to improve the germination rate of plants. When the plant grows to 10 cm, nitrogen, phosphorus and potassium compound fertilizer can be applied once to supplement nutrition.
Sowing date of cold potato
The adaptability of cold potato to the environment is relatively shallow, and it can be planted from April to May every year. Fruits can be harvested in May-June after sowing, in September for medium-heat varieties and in early June for medium-and late-maturing varieties10-/kloc-0. The specific sowing date needs to be adjusted according to the local climate conditions.