During the growth of onions, the phenomenon of premature twitching often occurs. To prevent unripe convulsions on onions, focusing on prevention, mainly to grasp the following four points: Timely sowing. Timely sowing is not only the key measure to prevent unripe onion onion, but also the key to high yield. From late September to mid-October, sowing is a timely sowing period, which can avoid the defects of early seeding (early September) seedling growth, false stem diameter more than 0.6 centimeters, the increase in bolting rate, and It can avoid the contradiction that the seedling growth is small, the bulb is small and the yield is low due to sowing late (in late October). Timely planting strong seedlings. It is generally better to plant from November to December. Planting strong seedlings can be “long-steady and life-saving†during wintering, rapid growth after the Spring Festival, rapid bulb enlargement, low rate of unripe convulsions, high yield, large planting seedlings, large amount of growth during winter, vigorous reproductive growth after Spring Festival, convulsions Very high, low yield; planting seedlings, due to lack of growth, its small bulbs, low yield. Reasonably water and fertilize. The level of onion twitching has a significant relationship with the amount of growth during the winter, and the amount of growth is directly related to the fertilization. In order to ensure that the onion during the overwintering period is “long-lasting and life-savingâ€, no top dressing is applied during the winter, and after the Spring Festival, it is chasing 3 fats, ie, chasing the first time in mid-March, chasing the 2nd time in mid-April, and chasing the 3rd time in early May. Each time, the application of urea 15-25 kg, potassium sulfate. 5--7 kilograms to promote its vigorous growth, inhibit reproductive growth, reduce the rate of immature convulsions. During the winter, unless the survival rate of the onion is low, once the horse is irrigated. After the spring, combine topdressing and watering to keep the soil moist. Prevent winter warmth. Warm winter is one of the most critical factors for onion ripening. Therefore, we must attach great importance to the winter warm winter, we must focus on controlling the water and fertilizer during the winter, so that the onion "long stability and life insurance." After the spring, timely recovery of water and fertilizer, promote vegetative growth, control of reproductive growth, reduce the rate of immature convulsions, when the field appears unripe convulsions to fight in time to reduce production loss. In addition, we must especially remind farmers to pay attention to doing a good job of cultivating loose soil and remove weeds in time.
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