Coincidentally, greenhouses, spring celery, celery
First, varieties of varieties should use "Wentura" and "California" and other imported varieties. Second, nursery seeding time in late January, the use of 288-hole plug seedlings, acres of seed for 30-50 grams. The proportion of peat, vermiculite, and perlite in the nutritious soil of the plug tray is 5:3:2. For each cubic meter of nutrient soil, 1-1.5 kilograms of compound fertilizer can be mixed and screened and plated, sowed, covered with soil, and watered. Then cover the straw curtain on the plug to moisturize and keep warm. 12-15 days can emerge. After the seedlings are lifted off, the daytime temperature is maintained at 20-25°C and the night temperature is maintained at 13-15°C. When the seedling age is 40-50 days, it can be grown to a seedling height of 5-8 cm, with 4-5 true leaves and dense green-green celery seedlings. Third, planting and cultivation of greenhouse spring celery can be used flat ridge cultivation and ridge cultivation. Apply 2-3 cubic meters of chicken manure and 60-70 kilograms of compound fertilizer per acre. About 5000 plants per acre were planted and watered after planting to ensure its survival. Fourth, management of water and fertilizer at a suitable temperature to ensure fertilizer and water supply is the key to the production of quality celery. The topdressing of celery was dominated by nitrogen fertilizer, supplemented by phosphorus and potash fertilizer. Nitrogen and potash fertilizer were the main fertilizers in the later stage, supplemented by phosphate fertilizer, and supply of boron, molybdenum, calcium, and other trace fertilizers was ensured to prevent nutrient deficiency. In the early stage of light growth, strong light is given as much as possible to promote thick leaves, and weak light is used later to promote longitudinal growth of the plants. Temperature Celery prefers a cool environment. During the growing season, the temperature cannot exceed 25°C during the day and the temperature at night is not lower than 13°C to ensure that the Celery is in optimum growth temperature for a long time. Diseases and insects use of Miconazole, Lei Duomier and agricultural streptomycin and other fungal and bacterial diseases. Use disease-causing spirits and viral crackers to prevent viral diseases. Aketai and other control aphids and whitefly.