before planting, dig up the mother plant, cut off the excessive roots, and separate the plants from each other by hand. Each plant should have stems and roots, with a row spacing of 15-2cm and a hole spacing of 8-1cm. Each cluster can be planted with 3-4 plants, and the planting depth is 5cm.
Fertilizer and water management The root system of chives is underdeveloped, with shallow distribution, which is not drought-tolerant and waterlogging-tolerant. Water should be watered frequently to keep the soil moist, and attention should be paid to drainage to prevent roots from rotting and seedlings from dying. It is sunny from May to October, and water it once every morning and evening. Never water at noon.
topdressing should be a small amount of times, and thin fertilizer should be applied frequently. After the onion is alive, it should be topdressing with 5 kg urea per mu as tillering promoting fertilizer, once every 12-15 days, and topdressing with 1 kg urea per mu at the peak tillering stage and adding 8 kg potassium chloride or 2 kg compound fertilizer of 15: 15: 15 as tillering strengthening fertilizer. 15 ~ 2 days before harvest, add 15 kilograms of urea per mu, and fertilization must be combined with watering. Pay attention to intertillage weeding at ordinary times.
Common diseases in pest control include downy mildew, gray mold, epidemic disease, purple spot and leaf blight, which can be controlled by 72% Kelu wettable powder 6 times or 25% metalaxyl 1 times or 64% antivirus alum wettable powder 6 times. Insect pests include liriomyza sativae, thrips allii and Spodoptera litura, which can be controlled by 1,8% avermectin EC 3 times.
After the chives are harvested, they begin to tiller, and the second tiller is drawn from the tiller. Generally, harvesting can begin 2-3 months after planting.