What problems should be paid attention to in onion planting?

When it comes to onions, we must all be familiar. Many people are moved to tears when they are talking about onions, because the smell of onions is too choking, but the nutritional value is very high, and the taste is not bad. Here, the editor tells everyone to dip onions and kitchen knives and hands with water when cutting onions, so that cutting onions won't hurt your eyes. However, what the editor wants to share with you today is some notes on onion planting sorted out by the partners of the pro-agricultural network. As for the tips in life, you can follow us and continue to understand.

1. Seed selection

When it comes to seed selection, we all know that we must choose high-quality varieties, so how to choose? First of all, we need to understand the planting situation of local onions to see how the varieties they choose and whether the yield is high, and the second is to analyze the market to see whether the onions of this variety are competitive. After selecting the varieties and planting them, we need to screen out high-quality seeds. We mainly observe whether the seeds are bright in color, whether the seeds are full, whether there are diseases and insect pests, and so on.

2. Time

The correct choice of planting time of onions has a great impact on the yield of onions, so you must pay great attention to the timing of planting onions, although onions can be planted all the year round. However, if you want to plant onions with high yield and high quality, it is best to plant them in August and September, when the temperature in the general area is about 20 to 25 degrees Celsius, when onions sprout and grow.

3. Watering

We must water the soil before sowing to ensure the moisture of the soil, and then we need to water it when the onion grows three leaves. Onions need to have a certain amount of water during the growing period, not too dry, otherwise the onions below will not grow big, and the onions will not have any water, usually we water them once a week, but we should be careful not to water them in winter, otherwise the onions will rot.

4. Fertilization

Fertilization is a very important part of onion planting, so special attention should be paid to the irreparable loss to the growth of onion if the wrong fertilizer or wrong dosage is used. When there are conditions, it is best to give priority to farm manure or organic rotten fertilizer, assisted by an appropriate amount of chemical fertilizer, the average amount of fertilizer per mu is about 2,000 jin, of which the amount of chemical fertilizer is about 300 jin. The second is that onions need sufficient nutrients during the growing period, so we should apply an appropriate amount of fertilizer according to the growth status of onions, and choose what kind of fertilizer to apply according to the specific situation.

5. Prevention of diseases and insect pests

The most common diseases and insect pests of onions are downy mildew, downy blight and onion field flies. The control methods of downy mildew and blight are generally sprayed with chlorothalonil or Bordeaux solution, while onion flies can be watered in the field. because onion flies are very afraid of water, they will escape or even drown, and finally trichlorfon crystals can be used to control them.