Field management techniques of Chinese onion

Green onion is inseparable from staple food and vegetables in life, and it is inseparable from cooking. It has a very high vitamin content, which can prevent some diseases and relieve fatigue. The planting process of scallions is relatively simple. In order to achieve the goal of high yield, field management techniques are very important. Let's take a look at the field management techniques of scallions together with Xiaobian.

1. Watering

Green onions after planting into the summer high temperature period, when the key point of management is to promote roots, should be controlled watering, drainage after rain to prevent waterlogging, so as not to cause rotten roots, yellow leaves and dead seedlings. At the same time, it is necessary to strengthen mid-ploughing and promote root growth. During the period from the Beginning of Autumn to White Dew, watering should be light and watered sooner or later. After Welsh onions enter the peak growth period, watering should grasp the principles of frequent watering and re-watering. Once every 5 days, the temperature is lower after Frosts Descent. At this time, Welsh onions basically grow, water is needed to water, just keep the soil moist, and stop watering 5-7 days before harvest for storage and transportation.

2. Topdressing

Green onions should not only apply sufficient base fertilizer before planting, but also need to be fertilized by stages. After the beginning of autumn, the plant growth is accelerated and the amount of fertilizer is increased. At this time, the mother needs to apply 1500-2000 kg of rotten farm manure and 20-25 kg of superphosphate to promote leaf growth. White Dew entered the peak period of green onion growth, which is the key period for the formation of green onion yield. at this time, it should be combined with watering and topdressing twice, each time 15-20 kg of urea and 10-15 kg of potassium sulfate per mu, sprinkled between rows, and watered after shallow ploughing.

3. Cultivate the soil

Soil cultivation is to soften leaf sheath and prevent lodging, and it is an important measure to improve the yield and quality of green onion. It is generally necessary to cultivate soil 2-3 times from the Beginning of Autumn to before harvest, and the first two times are combined with intermediate ploughing to choke the ridge soil into the onion ditch and fill the ditch.

4. Pest control

The common diseases and insect pests of scallions are downy mildew, black mildew, purple spot, leaf miner, thrips and root maggots, etc. It is necessary to accurately grasp the occurrence period and symptoms of diseases and insect pests. In the promotion and application of botanical pesticides, biological pesticides, or high-efficiency, low-toxic and low-residue pesticides, green comprehensive prevention and control should be carried out in time.

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