Electric High Performance Sleeve Control Valve high performance control valve,Electric high performance control valve,sleeve control valve,Electric sleeve control valve,high performance Electric Valve,high performance sleeve control valve Jiangsu Tanggong Automatic Control Equipment Co., Ltd. , https://www.tgcontrolequipment.com
High-yield method for greenhouse loofah
Greenhouse loofah cultivation requires careful attention to several key steps to ensure a successful harvest. First, variety selection is crucial. Greenhouse loofah should be planted with varieties that have strong growth, cold tolerance, and high adaptability. A suitable choice is the cylindrical loofah variety, which thrives in controlled environments.
Second, land preparation and fertilization are essential for healthy plant development. Before planting, the soil should be thoroughly tilled and leveled. Apply over 5,000 kilograms of high-quality compost per mu, and then create furrows along the planting lines. In each furrow, apply 50 kg of calcium phosphate and 25 kg of potassium sulfate, or alternatively, 100 kg of well-decomposed cake fertilizer. This ensures the soil is rich in nutrients and ready for planting.
Third, timing and planting methods play a significant role. Loofah can be sown directly in mid-October or transplanted. The recommended ridge size is 70 cm between large rows, 60 cm between small rows, and 30 cm between plants, resulting in approximately 3,400 plants per mu. Proper spacing allows for optimal growth and air circulation.
Fourth, seed soaking and germination are critical for strong seedlings. Soak seeds in hot water at 60°C for 10 minutes, then cool them for 24 hours. After soaking, mix the seeds with a clean cloth and place them in a warm environment of 28–32°C for germination. Rinse the seeds daily until they show visible sprouts. Water the sowing bed with about 1.5 cm of water, and after sowing, cover the soil lightly. Seedlings will typically emerge within 3–4 days. Once the seedlings have 1–2 true leaves, thinning can begin, leaving only one plant per hole.
Fifth, managing the greenhouse environment is vital. Maintain daytime temperatures between 25–30°C and nighttime temperatures around 18°C. During the early growth stage, control sunlight exposure to promote stem and leaf growth and female flower development. During flowering, open the greenhouse curtains to maximize sunlight and raise temperatures.
Watering and topdressing should be done carefully. After transplanting, keep the soil slightly moist by watering 1–2 times. When the vines reach about 5 cm, hill up the soil and apply 30 kg of potassium dihydrogen phosphate per acre. After flowering, water every 7–8 days and apply 5 kg of urea per acre as a top dressing.
Vine training and plant adjustment are also important. When the vines reach 25 cm, provide support using wires or nylon ropes attached to the greenhouse frame. This creates a vertical structure, allowing the vines to grow straight without crossing. Tie the vines every 4–5 leaves using an "S" shaped method to guide their growth.
Lastly, preserving flowers and fruits enhances yield. Using a solution of 2.4–4D at concentrations of 20×10â»â¶ (when temperature is high) or 30×10â»â¶ (when temperature is low), apply it to the female flower heads or dip the flowers directly in the solution. This helps reduce flower drop and increase fruit set. Apply this treatment around 8 am for best results.
Pest and disease management is equally important. Common diseases include anthracnose, downy mildew, and gray mold. These can be controlled with fungicides like carbendazim, chlorothalonil, or polymyxin. Insect pests such as aphids and whiteflies can be managed using fish vine essence or broom spirit.
By following these detailed steps, farmers can achieve a healthy and productive greenhouse loofah crop. Each stage of the process contributes to the overall success, ensuring quality and high yields. With proper care and attention, greenhouse loofah farming can be both efficient and rewarding.