In recent years, the Jixi City Institute of Agricultural Sciences selected a variety of extremely early potato varieties suitable for cultivation in the region from a variety of potato varieties, and cooperated with early-maturing and high-yielding techniques such as accelerating shoots, planting seedlings, mulching, mulching, mulching, irrigation, and irrigation. In the second and third accumulated temperature zones in Heilongjiang Province, it has been cultivated twice a year. After harvesting the potatoes, the land can be double crops such as autumn cabbage, autumn radish, and late oil beans. It can also be transplanted into late watermelon, late green pepper, late eggplant, and autumn. Cabbage is also an ideal intercropping crop for large double crops such as corn and watermelon.

Variety selection: Select very early potato varieties harvested within 60 days after emergence.

Warm seeds, cuts, germination, and drying buds: Pick disease-free seed potatoes and lay them in a room at about 20°C, warming and germinating them for 7 to 8 days. After germination, the buds are cut into pieces, each of which is about 25 grams. After cutting, the seeds are planted with a small amount of plant ash. After 2 to 3 days, the seeds are placed in a shed at a temperature of about 20°C, a layer of moist fine soil, each layer is 6 to 8 cm thick, and 2 to 3 layers are stacked. The top layer is fine soil and the overlying mulching occurs. . When the bud grows to 1 to 1.5 cm, the buds are sprouted and the buds are thickened and softened to facilitate planting.

Fertilization, site preparation and deduction: When farmland is layered, 45 to 75 tons of manure, 300 kg of diammonium phosphate, 225 kg of urea, and 225 kg of potassium sulfate are applied per hectare. . Use a rake to pry the sloping blocks of the ridge into the ditch so that the ridges become shorter, so as to facilitate the removal of the film and cover the soil.

Planting: Drilling on the mulch at a spacing of 20 to 25 centimeters, 10 to 12 centimeters deep, planting a block, irrigating the water, and covering the soil.

Field management: When the seedlings arch the top film of the soil, the seedlings shall be placed, and the soil shall be sealed at the mouth of the film; unemerged pods shall be opened every 2 days to allow the seedlings to cool with the outside to prevent burning of seedlings. When a small amount of plants in the field are budded and uncovered, the grass is manually taken and the soil is soiled. The shovel is not available at this time so as to avoid scooping out the small tubers. The leaves were sprayed with potato expander and foliar fertilizer, and water was poured. After 1 week, water was poured again.

Harvesting: When the leaves at the bottom of the plants turn yellow, they can be listed and graded according to the market conditions, market supply and demand and prices.

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