Autumn celery three period management

First, the early growth period. Autumn celery should always be watered after planting to prevent surface drought and cracking. When a new leaf grows after 10 days, watering is stopped, rows of cultivating loose soil, 2 to 3 days before watering, and watering is not carried out within 4 to 5 days afterwards. About 15 days after seedling sowing, 15 kg of urea was applied per acre to promote seedling growth.

Second, strong growth period. After the plants are sealed, due to the moist soil, a lot of white roots will appear on the surface, which means that the vigorous growth period has already arrived. At this time the temperature is appropriate, is an opportunity to seize high-yield, so do the water and fertilizer attack, 7 to 10 days to recover a fertilizer, urea, 20 kg per mu, to ensure that the growth period is not de-fertilizer. The last time the top dressing is finished is two weeks before harvest. From about 20 days before harvest, spraying 0.3% urea + 0.3% - 0.5% potassium dihydrogen phosphate once every 3 to 5 days.

Third, the late growth period. Before and after the cold dew, the temperature gradually decreased, and the celery grew slowly. The celery could be poured once every 3 to 4 days. The 20-day (gibberellin) solution was sprayed 20 days before the harvest. The first time was 30PPM, and then sprayed after 3 to 5 days. Once, the concentration is 35 PPM. When the minimum nighttime temperature reaches -2°C, it begins to be harvested for marketing or storage.

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