How to prevent onion twins

How to prevent onion twins? Please guide to improve the quality of onion products, early prevention of "twins" is very important. Onions have a high probability of "twins", which seriously affects the value of commodities and should be prevented as soon as possible. The causes of twins are: too early sowing, too large seedlings before winter; too much nitrogen fertilizer applied at seedling stage; warm winter, cold spring, etc., all of which will cause secondary tillering at seedling stage and form "twins". In addition, seedling growth point suffered from pests; fertilizer burning; artificial injury, etc., will also lead to two tillering. Bad seeds are also one of the factors that cause onion twins. Preventive measures: timely sowing, planting, seedling bulbs with a diameter of 3~0.8 cm is appropriate, too large and too small should be removed; seedling timely spraying new lipid membrane to prevent bacterial infection, improve the ability to resist natural disasters, improve photosynthesis intensity, protect seedlings thrive. Appropriate application of nitrogen fertilizer, fertilizer to nitrogen, phosphorus, potassium combined application; timely prevention of cutworm, insect, mole cricket, beet moth and other pests; should pay attention to not sprinkle chemical fertilizer into the leaf sheath; management should pay attention not to trample seedlings If twins are found during the growing season, bamboo strips can be used to remove one of them and retain the other. Timely spray tree general sterilization disinfection, protect the wound health healing. After the wound is healed for a few days, watering and topdressing are carried out, and the ground fruit is sprayed to thicken the nutrition transportation conduit of the underground fruit, improve the expansion vitality of the ground fruit, smooth the fruit surface, robust the fruit shape, and high quality and high yield. Click for more onion growing techniques Click for more vegetable growing techniques