How to water and fertilize green onions in autumn?

How to water and fertilize green onions in autumn? The center of field management of spring onions in autumn is to promote roots, grow strong and soften the soil, strengthen the management of water and fertilizer, and create suitable environmental conditions for the formation of green onions, so as to improve the yield and quality of green onions into summer after planting. At this time, the management center is to promote roots, watering should be controlled, drainage and waterlogging should be controlled 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. Stopping watering 5-7 days before harvest is beneficial to harvest, storage and transportation. Green onions should be fertilized by stages on the basis of sufficient base fertilizer. After the Beginning of Autumn, when the plant growth accelerated, "leaf-attacking fertilizer" was applied, 15002000 kg of rotten farm manure per mu and 20kg of superphosphate per mu to promote leaf growth. Entering the peak period of green onion growth after the White Dew Festival is the key period for the formation of green onion yield. "attacking plant fertilizer" should be applied twice in combination with watering, applying 15kg urea and 10kg potassium sulfate per mu, topdressing between rows and watering after shallow ploughing. 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. Onion and garlic vegetables are a kind of crop that needs more fertilizer and is tolerant to fertilizer. It is very important to apply adequate base fertilizer. Generally, organic fertilizer combined with phosphorus and potassium fertilizer or ternary compound fertilizer can be used. The nutritional characteristics of onion and garlic vegetables are not only potassium-loving crops, but also sulfur-loving crops. Therefore, under the premise of balanced fertilization, attention should be paid to the application of potassium sulfate, which has an obvious effect on increasing yield and improving quality. It is suggested that onion and garlic vegetables have high yield per unit area, and it is important to apply sufficient basal fertilizer. Onion and garlic vegetables like both potassium and sulfur, and the application of potassium sulfate is beneficial to increase the yield and improve the quality. Click to get more green onion planting techniques click to get more vegetable planting techniques