Detailed Explanation of the Latest Techniques for Winter Management of Welsh Onions

Welsh onions have excellent cold and heat tolerance, so they can be planted all year round. It is now winter, which is also the period for intensified management of winter welsh onions. In order to help welsh onions grow better in winter, and to help growers better manage the welsh onions they plant in winter, below we introduce in detail the winter management techniques for welsh onions. Let's take a look.

1. Water in a timely manner

After welsh onions are transplanted, water them immediately. The first watering should not be too much, so as not to collapse the onion trench and cause the seedlings to lodge or the roots to rot. After another 5-7 days, water once to help the seedlings recover. After that, water once every week to keep the soil moist. Each watering should not be too much. In addition, after heavy rain, drain promptly to avoid root rot caused by water accumulation. After Frost's Descent, reduce the watering frequency to once every 10-15 days. Before the winter freeze, water once with freeze-proof water. The freeze-proof water should be given sufficiently and thoroughly to raise the ground temperature and increase the welsh onions' ability to withstand cold and freezing.

2. Apply topdressing at the right time

Welsh onions generally need topdressing 3 times in winter. The first topdressing is after the seedlings recover, when the seedlings begin vigorous growth. Apply 8 kg of urea and 8 kg of NPK compound fertilizer per mu. When fertilizing, it can be applied between the rows or broadcast, and can be combined with watering to speed up nutrient absorption. The second topdressing is before Frost's Descent, and likewise 8 kg of urea and 8 kg of NPK compound fertilizer can be applied. The third topdressing should be before the freeze. Apply 20 kg of urea and 20 kg of potash fertilizer per mu. At this time, applying potash fertilizer has an obvious yield-increasing effect. In addition to topdressing, foliar spraying should also be done. You can spray low-concentration solutions of ferrous sulfate, ammonium molybdate, copper sulfate and manganese sulfate, which can increase yield by more than 10%.

3. Hilling

After each fertilization, water once and hill up the soil once. This can increase ground temperature and promote root growth. The hilling height should be such that it does not bury the heart leaves, and should preferably not exceed the branching point of the welsh onion. Hill lower rather than higher. When hilling, pay attention to the soil moisture content. It should be done when the soil moisture content is moderate and there are no clods. Also be careful to avoid times when there is dew in the morning. Do not damage the plants when hilling, so as to prevent pathogens from entering and causing disease.

The above is an introduction to winter management techniques for welsh onions. We hope it can help you. If you want to learn more related knowledge, please follow us.