Green onions are no stranger to us. The green onion is spicy and mild, and has the effect of releasing the yang and detoxifying seasoning. Let's talk about the high-yield planting technology of green onions. First, the variety selection It is necessary to choose the varieties suitable for local cultivation, such as the big paulownia, the gas hurricane, the "two nine series" and so on. Second, nursery 1. Intensive cultivation and rational fertilization: use the plots with flat terrain, fertile soil, convenient irrigation and drainage, and thick layer of cultivation for seedlings. 2,500 kilograms of fermented organic fertilizer, about 25 centimeters of shallow ploughing, flattening and fine, and forming a scorpion with a width of 1-1.2 meters. 2, seed treatment: winter storage green onion seedlings suitable for sowing date is from September 25 to October 5. Before the sowing, apply 5 kg of diammonium phosphate and 5 kg of urea as seed fertilizer, and simmer the soil and fertilizer evenly, then flatten. Seeds are soaked in warm water at 35-40 °C for 8-10 hours before sowing, and aired for 5-6 hours. 3, sowing: first planting water to moisten the ground, soak the water evenly after soaking, and then cover the soil 1 cm. 2 to 2.5 kg of seed. After the broadcast, there are cracks on the surface of the sunny day, and the noodles, the oysters and the warmth are good for the whole seedlings. After the Miaoqi, strict control of the unearthed water and the head water, but also control the cotyledons before the watering, so as not to cause the slab joints and siltation. 4. Seedling management: From seeding and emergence to the end of December, properly pour 2-3 times of water after 5 cm of seedling height, and pour antifreeze water in late November. At the beginning of December, a thin layer of fine horse manure or soil fertilizer, grass ash is applied, and the thickness is just to expose the leaf tip to ensure the seedlings are safe for winter. The standard for the onion before wintering is: (1) The average plant height is about 10 cm. (2) There are 2 true leaves and 1 heart leaf. (3) The diameter of the base of the bulb of the seedling does not exceed 0.3 cm. (4) Miao Zhuang is not prosperous. At the end of February of the year of Hunchun, the horse manure covered in the winter was first taken out, and the broken part was filled with soil. It is also possible to apply 2,000 kilograms of minced and mixed fertilizer in the early morning, and then lick it again, which is good for keeping warm and keeping the seedlings early. In early March, weeds should be removed. In the middle and late March, the water is poured back to the appropriate water in the late evening. At the beginning of April, the first seedling was 15 cm between the seedling height. In mid-April, the second seedling was 20 cm between the seedling height and the seedling distance was 4-7 cm, leaving about 120,000 mu. Each time the seedlings are combined and drained, watering is performed once. May is the long-term growth period of onion seedlings, and it is also a crucial period for cultivating strong seedlings and upgrading of three types of seedlings. At this time, 20 kg of urea is applied to the acre, and then 2-3 times of water is poured, and pests and diseases are simultaneously prevented. In June, the onion seedlings were mainly controlled and seedlings were carried out. Strong seedling standards: seedling height 50 cm, pseudo stem length 25 cm. The thickness is about 1 cm, the fresh weight per plant is about 40 grams, there are 5 true leaves, and it has the typical traits of this variety. Third, planting 1. Planting before planting: It is convenient to fill and drain, and the layer of tillage is thick. In the past 3 years, the plots of green onions, onions, garlic and leeks have not been planted, and the ditch is digging in the north and south. The distance between the grooves is 80 cm, and the depth and width of the ditch are 30-35. Centimeter, the bottom of the ditch is evenly mixed with soil, 20 kg of urea is applied, 20 kg of diammonium phosphate and 10 kg of potassium sulfate. The bottom of the ditch has a loose layer of 15 cm in width and 25 cm in depth. The ridges are smashed and smashed to make it easier to stand when transplanting. 2. Planting: The best transplanting period is mid-June, but it will be planted in the next ten days. Before the seedlings, the nursery is poured with small water, carefully seedlings, to prevent damage to the roots, remove the residual seedlings with pests and diseases, select the strong seedlings with typical traits of the variety, size and grade, and plant with the seedlings. Generally, there are 1.6-18,000 plants per acre, that is, 80 cm groove spacing, planting a single ridge, the plant spacing is 5 cm, and the nutrient area per plant is 0.04 square meters. Each acre of onion can be planted 4-6 acres of field. After the bottom of the ditch in the Saigou ditch, use the two-toothed hook or the small bunker ditch to drain the water. After the water has been infiltrated, the onion is placed with a 40 cm long, 1.5 cm diameter, topped fork. When the onion seedlings are inserted and the green onion seeds are pulled out from the ditch, a hole is flashed, that is, the onion eye, to be retained, is conducive to the roots and scallion ventilating and ventilating, and letting it be sun-dried. Planting depth: It is better to use the onion seedling heart leaf 8 cm or more from the ditch surface. Fourth, field management After the onion seedlings are planted for half a month, they are properly watered. In case of timely drainage, the water in the ditch is strictly prevented. After slow seedlings, it is necessary to carry out cultivating and weeding, and only hooking unsoiled soil to improve soil aeration. In August, the growth of scallion began to lengthen. You can apply 2000 kg of decomposed organic fertilizer on the back of the ridge, or 20 kg of diammonium phosphate, and then spray 15 kg of urea. Once shallow, the soil fertilizer and urea will be poured into the ditch, followed by pouring water. In late August, enter the tubular blade for a long time, and it is necessary to pursue quick-acting nitrogen and potassium fertilizer. Mu chasing urea 15 kg and potassium sulfate 20 kg or chasing cake fertilizer, plant ash, ammonium bicarbonate and so on. After top dressing, pour 2 times of water. When the ridge back is dry and wet, it is suitable for cultivating, magnifying sputum, first surrounding the onion, and then breaking the ridge and gully. In early September, the scallion began to grow vigorously, and it still had to catch the quick-acting nitrogen and potassium fertilizers. The amount of topdressing was the same as that of the leaves. Then cultivate the soil. It is advisable not to bury the heart. The original ridge back ditch, immediately watered twice in the ditch. The above is the high-yield planting technology of green onions. Planting green onions for high yields, you must pay attention to the selection of quality varieties and fine field management. 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