In recent days, farmers from Shaanxi, Gansu, Shanxi and other places have called for information on new potato planting techniques in the early spring. For this reason, the reporter interviewed Guo Zhiqing, a researcher at the College of Horticulture, Northwest Agriculture and Forestry University. She said in an interview that potatoes can pass through the “three membranes†in early spring. The "covered" way of cultivation is better. The three-membrane-coverage refers to the cultivation mode of a large arched shed and a small shed, and then covers the ground film. The sowing time can be advanced by more than one month.
Technical points
The selected varieties were selected to meet the local market demand, early maturing, high-quality fresh food species, such as Zhongshu No. 3, Shuangfeng No. 5, Zaidabai and Dongnong 303.
Deep plowing and sowing of organic fertilizer before sowing deep plowing after sowing, sowing 7 to 10 days before the film to increase the temperature of the greenhouse film.
Seeding method to open 5 to 7 cm shallow ditch, the end of the width of 20 cm, apply fertilizer after pouring small water conservation, density 4500 to 5000 per mu. After sowing, the soil should be covered with ridges, sprayed with herbicides, and covered with plastic film; every 2 to 4 rows buckle a small shed, and the vinyl shed film covers the arch surface.
Before the emergence of field management, the lighting and temperature in the shed must be increased to prevent bad weather from damaging the shed; the seedlings should be manually assisted to break the membrane; after the seedlings are planted, the seedling water should be poured according to the soil moisture, and the ridges should not be flooded when watering; Watering should be carried out in a timely manner. Avoid flooding and ridges. We must keep the soil moist and not cause water accumulation in the fields. At the same time, we must pay attention to prevention and control of late blight.
Precautions
1. Select high-quality virus-free seed potatoes for early maturing varieties.
2, when the potato shoots top film should be promptly broken soil seedlings, and compaction holes with soil.
3. The temperature inside the shed is maintained between 20°C and 26°C during the day. As the temperature rises, the ventilation volume is gradually increased. When the temperature is too high, the small arch shed is completely removed.
4, timely harvest, specific harvest time, depending on the market and production, and the morning market, to obtain good returns.
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