How to fertilize green onions?

How to fertilize green onions? Please give an introduction to the following methods for planting green onions: when the growth of the plant is accelerated, the "leaf-breaking fertilizer" should be applied once, 15002000 kg of rotten farm manure and 20kg of superphosphate per mu. If the soil fertility is high and the bottom fertilizer is sufficient, the topdressing can be postponed appropriately, and the fertilizer can be changed to 750 kg of human feces and urine, or sprinkle 100 kg of plant ash, 30 kg of ammonium humate, 30 kg of calcium superphosphate, and cultivate the soil with deep hoe after fertilization. watering immediately. Entering the peak growth period of onion after Bailu Festival is the key period for the formation of green onion yield. "Zhuanggu Fertilizer" should be applied twice in combination with watering, applying urea 15kg / mu and potassium sulfate 10kg / mu between rows, and watering after shallow ploughing to speed up the absorption and utilization of fertilizer. Watering late summer and early autumn, the field management center is to promote roots, watering should be carried out because of the weather, in addition to long sunny without rain, in general, we should pay attention to control watering, drainage and waterlogging after rain, to prevent rotten roots, yellow leaves and dead seedlings. At the same time, strengthen mid-tillage to promote root growth. Between the Beginning of Autumn and White Dew, irrigation should grasp the principle of light watering and watering sooner or later. After White Dew, green onions entered the peak period of growth, irrigation should grasp the principles of frequent watering and re-watering. Water every 4-6 days. After Frosts Descent, the temperature dropped, green onions basically grew, water demand decreased, and the soil should be kept moist. Stop watering 5-7 days before harvest to reduce the water content of scallion in order to facilitate harvest and prolong storage period. Scientific soil cultivation should be carried out in combination with water and fertilizer management. Soil cultivation is an important measure to soften leaf sheath, prevent lodging and improve the yield and quality of onion. From the Beginning of Autumn to before harvest, generally cultivate the soil 3 times, the first two times combined with mid-ploughing, the ridge soil will be choked into the green onion ditch, the End of Heat will fill the ditch. Spring onion every time the soil height should be determined according to the growth height of the pseudostem, 3-4 cm each time, the soil should be cultivated to the outlet of the uppermost leaf, must not bury the heart leaf, prevent the leaf from rotting. Click to get more green onion planting techniques click to get more vegetable planting techniques