Management methods of Welsh Onion during High temperature period

Green onion is one of the most common side dishes in our daily life, and it has a wide planting area in every region of our country. When planting green onions, we need to adjust the management method reasonably according to the change of temperature. Especially in the period of high temperature, the planting management of green onion is more important. So green onions should be managed during the period of high temperature? Today, the editor brings you the management methods of green onions during the period of high temperature. let's take a look!

1. Promote roots and strong trees

If you enter a period of high temperature after the green onion is planted, then the focus of management at this time is to promote the root. Attention should be paid to watering, timely drainage in the rainy season, avoiding waterlogging, strengthening ploughing management and promoting root growth. In the green onion leaf peak period, the demand for fertilizer and water will be greater, at this time to combine watering for the first time topdressing. Fertilizer can be urea-based, about 20 jin per mu, but also with an appropriate amount of potassium dihydrogen phosphate or potassium nitrate. When green onions and green onions gradually form, it is an important period to ensure yield. At this time to topdressing twice or so, mainly nitrogen fertilizer, phosphorus and potassium fertilizer as a supplement, it is best to keep the soil moist and promote the growth of onion.

2. Rational cultivation of soil

Soil cultivation is also essential. Usually, the deeper the soil is cultivated, the longer the green and white will be. Therefore, soil cultivation is the main measure to soften the leaf sheath of Welsh onion, avoid lodging and improve yield and quality. The work of ploughing and soil cultivation should be carried out when the green onion is formed, otherwise it is easy to cause the green onion to rot. When cultivating the soil, we should pay attention to the thickness of the soil according to the seedling age. Especially after the Beginning of Autumn, it is generally necessary to cultivate the soil every two weeks or so for about two months, which is the main measure to ensure the length of green onions.

When cultivating the soil, it should be carried out in the afternoon, because the leaves of green onions are relatively soft at this time. If carried out in the morning, the leaves are relatively fragile and tender, which can easily lead to leaf damage. Do not bury the heart leaves in the soil to avoid affecting the growth of green onions. If the onion seedlings are relatively small, then it is necessary to cultivate the soil shallowly, and then gradually thicken the soil thickness with the increase of the number of times of soil cultivation. Keep it connected at the exit of the previous blade each time. Finally, the thickness of the soil should be kept about 15 cm above the ground, and remember not to bury the heart leaves to prevent the roots and plants from rotting.

3. Pest control

In the period of high temperature, it is the weakening period of the growth of green onions, which is very vulnerable to diseases and insect pests. Among them, the common ones are downy mildew and blight. Disease control is mainly based on early prevention, in transplanting should be properly sprayed to control, mainly chlorothalonil, can be mixed with the right amount of streptomycin, can achieve effective prevention effect on fungal and bacterial diseases. Then the main pests are spring onion thrips and leaf miners. To control insect pests, we should first do a good job of weeding, and then spray insecticides such as Aktai or Caixi to kill insects.

The above is a brief introduction to the management methods of green onions during the high temperature period. That's all for today's introduction. This article is for reference only. I hope it can be helpful to everyone.