Cultivation and management techniques of celery overwintering in greenhouse

1. Growth period management: after the completion of planting, water the slow seedlings in time, water again every 2-3 days, and spray the new high-lipid film, which can effectively prevent the ground water from evaporating and the seedling water from transpiration, which can isolate pests and diseases. , Shorten the slow seedling period, quickly adapt to the new environment, and grow healthily. After the celery seedlings are slowed down, control watering to squat the seedlings. Generally, the seedlings should be squatted for about 15 days to promote the differentiation of the roots and the heart leaves. Spraying vegetable Zhuangcailing at the right time can make the plant stalks thick, thick leaves, fresh and tender leaves, lush plants, and strong natural taste. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce the residual toxicity.

2. Fertilizer and water management: Celery enters the growth period and grows faster, and requires more fertilizer and water. During this period, keep the soil moist and provide sufficient water and nutrients for celery. During this period, the irrigation method was used for watering, combined with watering and topdressing nitrogen fertilizer. When topdressing urea, put the urea in a bucket and add water to dissolve it, and irrigate it to the field with water. The combination of watering and fertilization can make the fertilization evenly, and is conducive to the faster display of fertilizer efficiency. Real-time irrigating roots with root application and micro-fertilizers can induce plants to absorb, digest and release nitrogen, phosphorus, potassium, and maximum 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 should be controlled during the growth period of celery. The most suitable growth temperature for celery in the greenhouse in winter is 15-20℃. When the temperature is too high, the growth of celery will stagnate or even die; if the humidity is also at the same time Very large, celery is prone to diseases such as spot disease and leaf spot under high temperature and high humidity. Spraying the new high-fat film on the leaf surface can protect moisture, water resistance, evaporation, sun protection, drought resistance, heat preservation and frost protection, soil layer hardening, suffocation and isolation of the source of disease and insects.

4. Cold protection and heat preservation: The weather in northern my country is cold, with cold currents and cold air from time to time, and occasionally a large drop in temperature occurs. Because the suitable growth temperature for celery is 15-20°C, and the temperature is lower than 15°C for a long time, celery does not grow well. The main thermal insulation measure for celery cultivation in greenhouses is to cover straw curtains. If there is no cold current on a sunny day, the straw curtain can be put away at 8 or 9 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 the new high-fat film, which can prevent evaporation of water, bacteria infection, antifreeze and heat preservation.

Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone