Strengthening buds before sowing can promote early emergence of potatoes after sowing, neat emergence, consistent growth, early setting of potatoes, early maturity, and high yield. The spring potato planting with accelerated budding can increase the yield by more than 10% than without accelerating the bud seeding. In the case of a short growing season, it is especially important to promote strong buds before sowing. Here is a brief summary of the measures to promote sprouting of potato seed potatoes: 1. Medicinal seed dressing: mix 2 kg of 70% thiophanate-methyl and 1 kg of agricultural streptomycin with 72% of agricultural streptomycin evenly into 50 kg of talcum powder to make a mixed powder. For every 50 kg of seed potatoes, mix well with 2 kg of mixed powder to prevent the seed potatoes from rot. 2. Germination process: ①Warm seed germination: In a warmer room or in a rain-proof greenhouse (temperature at 18℃-20℃), find an open space and spread a layer of moist sand or loose fine soil about 10 cm thick. Seed potatoes are placed on sand or fine soil, spread into a thin layer, covered with about 5 cm thick sieved sand or fine soil, use a kettle to spray water to keep it moist (sand or fine soil is just formed into a mass when held by hand Appropriate), if the temperature is lower than 18°C, cover it with rice straw, wheat stalks, and grass thatch to insulate and accelerate germination. Moisturizing and antiseptic: If the covered sand or fine soil becomes dry during the germination process, use a kettle to spray water to moisturize. While moisturizing, prevent the seed potato from rotting. ②Cooling and strong buds: The young buds of the potato to be planted will grow about 5 mm, remove the cover, cool down appropriately (12-15°C) or move to a lower temperature, and gradually expose the buds to scattered light. Seed potatoes should be stacked 1-2 layers, not too thick. Be careful to turn gently every day to make the sprouts even and thick, and avoid too long buds in the lower layer. If the seed potatoes have sprouted during storage, the seed potatoes should be placed under scattered light to strengthen the buds. When the bud is about 1 cm long, it can be used for cutting or sowing. 3. Precautions for sprouting: Do not place seed potatoes directly under direct sunlight; handle seed potatoes carefully, handle them gently to prevent sprouts from breaking; seed potatoes should be placed in a well-ventilated place to avoid rain and frost.
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