The growth of onion requires roots to absorb nutrients and moisture. Whether it is planting in late autumn or planting in early spring, most of them are first cultivated and then replanted. This causes seedling transfer problems. How to improve the survival rate and enter the vegetative growth period early, there are several methods for reference. 1. Ensure that the soil temperature of the nursery is not less than 18°C ​​within 3-5 days after seedling. 2, seedlings should not be late as soon as possible, seedlings can be divided into seedlings when 1-2 true leaves, no more than three true leaves at the latest. 3. The seedling water should be poured the day before seedlings, which is convenient for raising seedlings, reducing root damage, and accelerating seedlings after seedling separation. Once the seedlings can not be too much, pay attention to shade, avoid seedlings too much water loss, combined with seedlings for seedling selection, requiring shallow planting, irrigation after planting, water should not be too large. 4, can use plant rooting agent, after the seedlings from the seedlings, the seedlings tied together in the preparation of a good rooting agent mucus, so that the onion root and rooting agent full contact, which is conducive to early rooting of onions, but also to prevent onions Dead seedlings, rotten noodles and other phenomena. 5. The method of removing the onion leaves from the seedbed can be adopted. This method is suitable for early spring colonization. Most of the seedlings planted in early spring are nurseries in protected greenhouses. The stems of these plants are not thick and grow tall. They have a top-heeled, shallow-rooted feel. Two methods can be used to shorten the time for seedlings to grow: one is not required to transport directly. If the seedlings are planted, the onion seedlings may be graded and the upper leaves may be cut with scissors at a height of 1 cm above the innermost heart. This will not only be beneficial to easing seedlings, but also conducive to rooting. three-way y-type gas valve,angiography hemostasis valve set,hemostasis valve set,Y-Valve Anesthesia Medical Co., Ltd. , https://www.medicaldiverse.com