The latest course of field management techniques and methods of green onions

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

1. Watering

After planting, scallion enters the summer high temperature period. At this time, the management key point is to promote roots, control watering, drain water after rain and prevent waterlogging, so as not to cause rotten roots, yellow leaves and dead seedlings. At the same time, it is necessary to strengthen intertillage and promote root growth. During the period from the beginning of autumn to white dew, watering should be light and watered in the morning and evening. After the scallion enters the peak growth period, the watering should master the principle of frequent watering and re-watering, watering once every 5 days, the temperature is lower after frost, then the scallion basically grows, water needs water, only need to keep the soil moist, stop watering 5-7 days before harvest, so as to store and transport.

2. Topdressing

In addition to applying sufficient base fertilizer before planting, scallion also needs to be applied by stages. After the beginning of autumn, the plant grows faster and the amount of fertilizer required increases. At this time, the mother needs to apply 1500-2000 kg of decomposed farm manure and 20-25 kg of calcium superphosphate to promote leaf growth. After white dew enters the peak growth period of scallion white, it is the key period for the formation of scallion yield. At this time, it should be combined with watering and topdressing twice, each time applying urea 15- 20kg and potassium sulfate 10- 15kg per mu, sowing between rows, watering after shallow cultivation.

3. Soil cultivation

Cultivate soil is to soften leaf sheath, prevent lodging, is an important measure to improve the yield and quality of onion, from the beginning of autumn to harvest, generally need to cultivate soil 2-3 times, the first two times combined with intertillage, ridge soil into onion ditch, ditch filling.

4. Pest control

Common diseases and insect pests of scallion include downy mildew, black mold, purple spot, leaf miner, thrips and root maggot. It is necessary to accurately grasp the occurrence period and symptoms of diseases and insect pests, and vigorously promote the application of botanical pesticides, biological pesticides, or high-efficiency, low-toxicity and low-residue pesticides for timely green comprehensive prevention and control.

The above is an introduction to the field management technology of green onion. I hope it can help you. If you want to know more about it, please pay attention to us.