Cultivation and management technology of wintering celery in greenhouse

1. Growth period management: After the planting is completed, the seedling water should be poured in time, and re-watered every 2-3 days, and sprayed with a new high-fat film, which can effectively prevent the ground water from evaporating, the seedling water from transpiration, and isolate pests and diseases. , Shorten the slow seedling period, quickly adapt to the new environment and grow up healthily. After the celery slows seedlings, it is necessary to control watering for squatting. Generally, squatting for about 15 days will promote the rooting of the pan pier and heart leaf differentiation. Spraying vegetables Zhuanglingling at the right time can make the stems of the plant stout, the leaves thick, the leaves color tender, the plants lush, and the natural taste is strong. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poison.

2. Fertilizer and water management: Celery enters the growing season, its growth is accelerated, and more fertilizer and water are required. During this period, the soil should be kept moist and sufficient water and nutrition should be provided for celery. Irrigation was used for watering in this period, and nitrogen fertilizer was applied in combination with watering. When applying urea, put urea in a bucket and add water to dissolve it. The combination of watering and fertilization can make the fertilization uniform, and it is conducive to the faster display of fertilizer efficiency. Real-time root irrigation and micro-fertilizer irrigation can induce plants to absorb, digest, and release nitrogen, phosphorus, potassium, and various trace elements in the soil, improve the positive energy of celery development, and optimize the quality of celery.

3. Temperature and humidity management: The temperature and humidity of celery should be controlled during the growing season. In the winter greenhouse, the most suitable growth temperature for celery is 15-20 ° C. When the temperature is too high, celery growth stagnates and even dies. Very large, celery is prone to spot and leaf spot diseases in high temperature and high humidity environments. Spraying a new high-fat film on the leaf surface can protect water, moisture, evaporation, sun and drought, heat insulation and freezing protection, soil layer compaction, suffocation and isolation of disease and insect sources.

4, cold insulation: cold weather in northern China, cold currents and cold air from time to time, occasionally a large temperature drop. Because the suitable growth temperature of celery is 15-20 ° C, and the temperature is lower than 15 ° C for a long time, celery does not grow well. The main insulation measure for celery cultivation in a greenhouse is to cover the grass curtain. If there is no cold current on a sunny day, the straw curtain can be stowed at eight or nine in the morning, which will not only help to increase the room temperature, but also increase the light and promote the growth of celery. And sprayed with new high-fat film, it can prevent evaporation, prevent germ infection, and resist freezing and heat preservation.

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