Harvest and Storage of Potato in Autumn
The harvest time of autumn potato is determined by the arrival of early frost. When the temperature drops to 2 ℃, the stems and leaves begin to die, and then enter the harvest time of autumn potato. Try not to damage potatoes during harvest so as not to affect storage.
After harvest, the potato should be pre-stored in a dry, ventilated and dark place (about 2-3 days), so that the temperature drops slowly, the moisture gradually dissipates, and the seed coat is aged, the respiration is weakened, and winter storage is carried out after entering the dormant state. The storage can be stored in an outdoor cellar or covered with sand indoors. The best temperature is 2-4 ℃ and relative humidity is 80%, which can maintain its inherent physiological activity. When the temperature is lower than 0 ℃, it will cause freezing injury, and when the temperature exceeds 7 ℃ for a continuous week, it will cause early germination and affect the storage quality.
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How to keep a potato seed in autumn
1. Fine soil preparation for autumn potato should choose fields with high topography, convenient drainage and irrigation and fertile soil, and loam soil is better. two。 Seed potato sprouting in mid-August, the harvested spring potato was picked out diseased potato, split potato, irregular potato, and cut into pieces according to the seed potato bud eye. Each seed potato was longitudinally cut into 6 pieces and mixed with 0.1 grams of gibberellin and 100 kilograms of water. Soak the potato pieces for 10ml for 20 minutes, take them out and dry them, then sprout with wet sand layer. Do not sprinkle water during the budding period, and the budding temperature should be kept above 30 ℃. At low temperature, ventilation, moisture
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Two Methods of Potato Sowing in Autumn
Whole potato sowing is the most effective method to control rotten and dead seedlings at present. Shandong, Henan and other places generally sow in the middle of August. The standard of whole potato for autumn sowing is that the whole potato is harvested in advance in spring and selected into small potato pieces of about 50 grams. Whole potato sowing, the amount of seed required is generally more than 1 times more than the amount of cut seed, every 667 square meters need about 50 grams of small potato pieces about 300 kg. These small potato pieces should be no injury, no disease, no cracks, bright skin color, moderate size. Treatment of whole potatoes Whole potatoes Autumn sowing
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