Detailed Explanation of Key Techniques for Growing Celery in Greenhouses

The land selected should be level and finely prepared. Before planting, the land should be tilled, fertilized, and weeded. Choose a greenhouse type with a span of 8-12m and a length of 60-120m, with earth walls on three sides and three rows of columns; on the columns, it is best to use bamboo or steel upright frames. Soak and sprout the seeds 7-8 days before sowing. The wet sowing method is mostly used, and after sowing the soil covering should be thin and even. Water moderately and control pests and diseases promptly.

1. Land preparation and fertilization

The land selected should be level and finely prepared. Before planting, the land should be tilled, fertilized, and weeded. Because the temperature inside the greenhouse differs somewhat from that outside, fertilizer should be applied in moderation to avoid soil deterioration caused by excessive fertilization. Appropriately increase the application of phosphorus and potassium fertilizers and reduce the use of nitrogen fertilizer.

2. Building the greenhouse

In general, choose a greenhouse type with a span of 8-12m and a length of 60-120m, with earth walls on three sides and three rows of columns; on the columns, it is best to use bamboo or steel upright frames. Use anti-drip film on the greenhouse surface to increase the temperature inside the greenhouse.

3. Sowing

Soak and sprout the seeds 7-8 days before sowing. First soak in cool water at 12-14°C for 12-24 hours, rinse the seeds clean, let them dry for a while in a cool, airy place, and when the seed surface is dry, wrap them in a wet towel and place them in a cool place (15-20°C) to sprout in the light. Once the seeds have sprouted, they can be sown. The wet sowing method is mostly used, that is, first water the base, and after the water seeps in, mix the seeds with sand and broadcast them. After sowing, the soil covering should be thin and even.

4. Management

Water moderately, and keep the seedling bed moist. When the seedlings have 2 leaves, thin them once. After the seedlings survive, carry out intertillage. When the seedlings grow to 5-7 leaves and the seedlings are 15-18cm tall, they can be transplanted. After transplanting, strengthen fertilizer and water management and control pests and diseases promptly to ensure their normal growth and development.