How to manage the high yield of planting green onions?

How to manage the high yield of planting green onions? Please introduce the method after green onions are planted from Grain in Beard (early June) to Lesser Heat (early July). In order to obtain high-yield and high-quality commercial onions, in addition to selecting good soil, stubble and varieties, field management is particularly important. The following points are introduced as follows: first, watering Welsh onions are in the hot and rainy season, pay attention to drainage to prevent rotting roots, and generally do not water, so that the roots renew quickly and the plants turn green. In the first and middle of August, the weather turns cool, the green onion is in the early stage of growth, the temperature is still high, the plant growth is slow, and the requirement for water is not high, so we should water less and avoid watering at noon. After the End of Heat, green onions entered the peak growth period, the weight of leaves and green onions increased rapidly, and the water demand also increased greatly. It should be combined with topdressing and soil cultivation, and water should be watered every 5 days, and the amount of water should be large and should be watered thoroughly. In this period, it should be watered for 8 to 10 times. After Frosts Descent, the temperature dropped, the green onion basically grew, and entered the full filling period of green onion, the plant grew slowly and the water demand decreased, but it was still necessary to keep the soil moist, so that the pseudostem was grouped, the mesophyll was thick, the glue was enriched, and the green onion was white, tender and fat. in this period, it is generally watered twice. The water is suspended for 10 days before harvest, which is convenient for harvest, storage and transportation. Second, topdressing timely and topdressing can meet the needs of the growth and development of green onions, and it is an important measure to obtain high yield and high quality of green onions. 1. Green onion early growth stage: just after the hot summer, the weather turns cool, the onion plant growth is gradually accelerated, we should chase a leaf-attacking fertilizer, apply 1000ml 1500kg mature farm fertilizer, 100kg plant ash, 15m / mu 20kg calcium superphosphate on the ridge of the gully, plough and mix well, hoe in the ditch, and then water once, which can promote the growth of green onion and supply the need of leaf increase and growth. 2. The peak period of green onion growth: it is the fastest period of green onion yield formation, the onion plant grows rapidly, the green onion is thicker, and needs a lot of water and nutrients. Nitrogen fertilizer was the main topdressing fertilizer, calcium superphosphate and plant ash were applied properly, and 2Mel was applied continuously for 3 times. Each mu of urea 10 Mu 15 kg, superphosphate 15 kg. For the first time, 10ml 15kg potassium sulfate was added to the fertilizer to improve the quality of onion. 3. Soil cultivation: soil cultivation is an important measure to soften leaf sheath, prevent lodging and improve the yield and quality of onion. Soil cultivation while strengthening the supply of fertilizer and water can soften the pseudostem, prolong the length of onion and improve the quality of onion. When scallions enter the vigorous growth period, as the leaf sheath lengthens, ploughing between rows should be carried out in time, and the soil should be cultivated for 4 times, each time the height of the soil should be determined according to the height of the pseudostem growth, about 3 Mel. 4 cm, the soil should be cultivated to the boundary between the leaf sheath and the leaf body, that is, only the leaf sheath should be buried, so as not to bury the leaf body, so as not to cause the leaf to rot. Soil cultivation should be carried out when the soil moisture is appropriate, usually in the afternoon, to avoid damage to leaves when the dew and humidity are high in the morning. Click to get more green onion planting techniques click to get more vegetable planting techniques