Onion cultivation in autumn

First, the appropriate sowing. Seeding early, prosperous seedlings before winter, it is easy to cause early sickness, too late is not conducive to seedlings overwintering. The best sowing is generally in mid-September, which must not be earlier than September 1 and no later than October 5.

Second, timely planting. Any suitable sowing is generally planted in mid-November, and no later than November 25. The average daily temperature is about 10°C. At this time, the seedling stem base is 0.5 centimeters thick, 3 to 4 true leaves, 40 to 50 days of seedling age, and 3 to 4 new roots can be grown before the soil is frozen to facilitate safe wintering.

Third, field management. Before planting, we must do a good job in breeding strong seedlings and prevent and control underground pests, and control watering and fertilization. If the seedlings are yellow, a 0.3% urea solution may be sprayed on the leaves. Before the freezing, it is necessary to pour enough overwinter water. After returning green, it will be poured once and return to Qingshui. After the leaves have entered the vigorous growth period, 15 kg of urea will be applied per acre. Before returning green for 50 days, before the expansion of bulbs, 10 kg of urea and 15-20 kg of potassium sulfate were applied. If it is found that twitching plants, the pods can be split from the middle to promote bulb enlargement.

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