Autumn sow harvesting is a common cultivation method for open celery. To avoid the slow growth of celery in the low-temperature conditions in autumn, frost and snow disasters occur in winter, causing some celery stems and leaves to wither, and the phenomenon of unstable yield is not high. There are also a lot of sheds growing celery in my area. The greenhouse celery cultivation technology is simple, easy to manage, and the number of pests and diseases is relatively small. The main fertilizer and water management technologies of the celery in greenhouses are described as follows:
1. Planting water after planting will take about 3 days to survive. After 7 days, new leaves will be sprouted to keep the soil moist and avoid drought.
2. After 15 days of planting, seedlings should be planted for 5-7 days to promote root down-shooting and new leaf differentiation. When the plants are thick, the seedlings are finished when the leaves are dark green, and water is poured every 5-7 days to keep the surface dry and wet.
3, planting about 30 days, the plant grows to 30 centimeters, enters the vigorous growth period, pours water once every 3-4 days, and after the seedlings are finished, 500 kilograms of human excrement or 15 kilograms of compound fertilizer per acre with water, After 15 kg of compound fertilizer was applied every 15 days, the fertilizer was stopped 20 days before harvest.
4, if the late lack of fertilizer, leaves yellowing, spraying 0.3% urea or foliar spray 0.3% of potassium dihydrogen phosphate to promote growth.
5, when chemical fertilizers are to be dispersed after the dew dew at noon, high temperature and rainy season, topdressing with nitrogen fertilizer, without human waste, so as not to rot.
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