Shade net summer and autumn celery cultivation

Planting and Cultivation of Celery: A Detailed Guide First, the process of planting seedlings begins with sowing in mid-June. The seedling stage should be kept around 40 days. Shortening the seedling period can enhance survival rates and promote faster growth. To prepare the seeds, soak them in fresh water for 12 hours, then add a germination promoter such as "90%" or similar, and continue soaking for another 12 hours. After washing and draining, place the swollen seeds in a damp cloth bag and refrigerate at about 7°C for 3-5 days. Stir the seeds daily and sow when they show 30% germination. For the seedbed, choose a plot that has not been used for celery before. Apply decomposed farmyard manure as a base fertilizer seven days in advance. Disinfect the soil using mancozeb or thiophanate at 1.5 g/m². Sow approximately 150 grams of seeds over an area of 80 square meters. After preparing the bed, spread the seeds evenly and cover with 2 cm of brown ash or well-decomposed pig manure. Install a shade house with two layers of shade net, keeping the height around 1 meter to protect against storms and provide cooling. Water the seedbed twice daily—morning and evening—to maintain moisture and aid germination. Second, planting and management are crucial for healthy growth. When the seedlings are about 38 days old, transplant them. Start by planting larger seedlings first, followed by smaller ones. Apply 4,000–5,000 kg of compost per mu, along with some phosphorus and potassium fertilizers. Applying plant ash after planting can improve tree survival and growth. Using early-maturing plant ash at a rate of one hen per 20 square meters can increase yield by 15%. Due to rapid growth under high temperatures, slightly higher density is acceptable—plant 6–8 seedlings per hole with spacing of 10 cm by 15 cm. After planting, cover the area with a shade net to reduce stress. Adjust the shed height for easier access and ensure the nets are spaced 50 cm apart to allow more light. In dry conditions, water the plants without over-saturating. Apply fertilizers like urea or human waste during the growing phase, and apply 15 kg of potassium chloride later to increase individual plant weight. Micro-fertilizers and growth regulators are essential. Celery is highly sensitive to boron, especially in high-temperature conditions. Spray 0.1% boric acid and 0.1% calcium superphosphate extract 2–3 times during the growing season to prevent leaf stem cracking. This also helps prevent late yellowing and supports overall growth. Use foliar sprays like “Sprayer Surface Treasures” and “Fertilizer Treasures.” Spraying gibberellin at 100 mg/kg 10–12 days before harvest can boost yield and quality. Third, pest control is important. Common pests include early blight, leaf spot, and locusts. At the first sign of disease, spray with a 75% chlorothalonil solution diluted 600 times, or use 0.1% sulfur powder with a Bordeaux mixture (1:0.5:200). Apply 30–40 kg per mu, repeating every 7 days for 2–3 times. For insect pests, mix 0.4% acaricide with 0.1% detergent, or use 50% dichlorvos diluted 500–600 times. By following these steps carefully, you can ensure a successful celery crop with high yield and quality. Proper care from the seedling stage through to harvesting is key to achieving optimal results.

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