The wintering celery in the greenhouse is mainly planted by means of nursery and transplanting. This will help improve production and quality, increase land utilization, reduce costs, and ensure that Miao Quan and Miao Qi. Seedlings transplanting should choose loose soil and fertile land as seedling nursery ponds, and seedlings should be treated before seedlings so that the seeds can be fully emerged and the seedlings are strong, which is conducive to the healthy growth of celery.
1. Growth period management: After the planting is completed, it is necessary to pour the seedling water in time, pour it once every 2-3 days, and spray a new high-fat membrane, which can effectively prevent the ground water from evaporating, the seedling water from transpiration, and isolating pests and diseases. , Shorten the period of seedlings, quickly adapt to the new environment, and grow healthily. After slow celery seedlings, it is necessary to control the watering of seedlings, generally about 15 days, to promote root differentiation and differentiation of the roots. The timely spraying of vegetables, stems and stems, can make the stem thick, leaf hypertrophy, fresh leaves, plants lush, natural taste. At the same time, it can increase the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons.
2, fertilizer and water management: celery into the growing period, growth is accelerated, the need for more fertilizer and water, in this period to keep the soil moist, adequate water supply and nutrition for celery. In this stage, watering is performed by means of irrigation, and nitrogen fertilizer is applied in combination with watering. When topdressing urea, urea can be added to a bucket of water to dissolve it, and it can be applied to the field with water irrigation. The combination of watering and fertilization can make the fertilization uniform and facilitate the rapid development of fertilizer efficiency. Real-time root application and micro-fertilizer combined with root can induce the absorption, digestion and release of nitrogen, phosphorus, potassium and various trace elements in soil, increase the positive energy of celery development, and optimize the quality of celery.
3, temperature and humidity management: celery growth period to do a good temperature and humidity control, winter greenhouses, celery the most suitable growth temperature is 15-20 °C, when the temperature is too high, celery growth stagnation, or even death; if the humidity is also Very large, celery in high temperature and high humidity conditions, prone to spot disease, leaf spot disease and other diseases. Spraying new high-fat membranes on the leaves can protect the water from evaporation, sun protection, drought, heat preservation, freeze-prevention, soil compaction, suffocation and isolation of pests and diseases.
4, cold insulation: cold weather in northern China, from time to time there are cold and cold air invasion, and occasionally significant cooling. Because celery suitable growth temperature is 15-20 °C, the temperature is below 15 °C long-term poor growth of celery, the use of greenhouse cultivation celery main insulation measures is to cover straw. If there is no cold weather on sunny days, we can retract the straw curtains at eight or nine o'clock in the morning. This will not only help increase the room temperature, but also increase the light and promote the growth of celery. And spray a new high-fat film, water evaporation points, anti-bacterial infections, freeze-thaw insulation.
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