What problems should be paid attention to in the latest onion planting?

When it comes to onions, we must all be familiar with them. Many people are moved to tears when they are eating onions, because the smell of onions is too choking, but the nutritional value is very high, and the taste is not bad. Here, Xiaobian tells everyone to dip onions, kitchen knives and hands in water when cutting onions, so that cutting onions will not be spicy to eyes. However, today's Xiaobian wants to share with you some precautions about onion planting sorted out by the partners of pro-agricultural network. As for the small tricks in life, you can pay attention to us to continue to understand oh.

1. Seed selection

When it comes to seed selection, we all know that we must choose high-quality varieties, so how to choose them? First of all, we need to know about the planting situation of local onions, see how they choose varieties, whether the yield is high or not, secondly, analyze the market, whether the onion planted with this variety is competitive, select the varieties and plant them to select high-quality seeds, we mainly observe whether the color of seeds is bright, whether the seeds are full, whether there are diseases and insect pests, etc., if not, it is OK.

2. Time

Onion planting time selection has a great impact on onion yield, so in the selection of planting time must be very careful, although onions can be planted all year round, but if you want to plant onion high yield and high quality then it is best to plant in August and September, when the general area temperature is about 20 to 25 degrees, the most time onion germination and growth.

3. Watering

We must water the soil before sowing to ensure moisture, and then wait until the onion has three leaves. Onion growth period is required to have a certain amount of water, not too dry, otherwise the onion below does not grow, and the onion does not grow moisture, usually we are watering once a week, but pay attention to is in winter when must not water, otherwise the onion will rot.

4. Fertilization

Fertilization is a very important part of onion planting, so special attention needs to be paid. If the fertilizer is used incorrectly or in the wrong amount, it will cause irreparable damage to onion growth. In the case of conditions, it is best to use farm manure or organic rot fertilizer as the main, supplemented by appropriate amount of chemical fertilizer, the average amount of fertilizer required per mu is about two kilos, of which the amount of chemical fertilizer is about three hundred kilos. Secondly, onions need sufficient nutrients during the growing period, so we should apply fertilizer according to the growth status of onions, and choose what kind of fertilizer to apply according to the specific situation.

5, pest control

The most common diseases and insect pests of onion are downy mildew, blight and onion field fly. The control method of downy mildew and blight is generally spraying chlorothalonil or bordeaux solution, while onion field fly can be watered because onion field fly is very afraid of water and will escape or even drown. Finally, trichlorfon crystal can be used for control.