Winter Management Technology of Welsh Onion

Green onion has excellent cold and heat resistance, so it can be planted all the year round. It is now in winter, and it is also the management strengthening period of winter green onion. In order to make green onions grow better in winter, and for growers to better manage green onions in winter, the following is a detailed introduction to the management technology of green onions in winter. Let's take a look.

1. Watering in time

Watering green onions immediately after planting, the first watering should not be too much, so as not to collapse the green onion ditch, so that the seedlings lodging or root rot, and then every 5-7 days, water a slow seedling. After every other week watering, keep the soil moist, watering each time should not be too much, in addition, after the heavy rain, timely drainage, so as not to cause plant root rot. After Frosts Descent, the watering frequency was reduced to once every 10-15 days, and once before freezing in winter. The frozen water should be poured thoroughly in order to increase the ground temperature and increase the cold-proof and anti-freezing ability of green onions.

2. topdressing at the right time

Green onion generally needs topdressing 3 times in winter. After the first topdressing, when the seedlings begin to grow vigorously, 8 kg of urea and 8 kg of ternary compound fertilizer can be applied per mu. When applying fertilizer, it can be applied or spread between rows, and can be combined with watering to speed up the absorption of fertilizer. Before the second topdressing, Frosts Descent can also apply 8 kg urea and 8 kg ternary compound fertilizer. Before the third topdressing, 20 kg of urea and 20 kg of potash fertilizer were applied per mu before freezing. At this time, the application of potash fertilizer had obvious yield increasing effect. In addition to topdressing, foliar fertilizer can be sprayed with low concentrations of ferrous sulfate, ammonium molybdate, copper sulfate and manganese sulfate solution, which can increase production by more than 10%.

3. Cultivate the soil

It is necessary to water the soil once and cultivate the soil once after each fertilization, which can increase the soil temperature and promote the root growth. The soil height should not be buried in the heart leaves, should not exceed the bifurcation point of scallions, and drive out the low but not the high. When cultivating the soil, we should pay attention to the soil water content, require the soil water content is moderate, when there is no mud, but also pay attention to avoid the dew in the morning, do not cause damage to the plant, lest germs invade and cause disease.

The above is the introduction of green onion winter management technology, hope to help you, want to know more related knowledge, please follow us.