New techniques for high-yield cultivation of scallions in Zhangqiu How to grow scallions How to grow scallions

The scallion is pungent and slightly warm, and has the functions of releasing yang, detoxifying and seasoning, sweating, inhibiting bacteria and relaxing blood vessels. The following are five key points of high-yield cultivation of Chinese onion:

First, choose superior species. Select excellent varieties such as chicken leg onion and high-footed white with high yield, strong disease resistance and spicy taste.

Second, choose the plot. Continuous cropping of green onions is the most taboo. The agricultural proverb says, "spicy food is blind, and leeks and garlic don't meet." Therefore, in the stubble arrangement, green onions can not be planted with garlic, leeks, onions and other Umbelliferae vegetables. But it can be intercropped or grafted with Chinese cabbage, eggplant, wax gourd, watermelon and Chinese cabbage. It is advisable to choose loam land with rich organic matter content, deep soil layer, high and dry terrain and convenient drainage. The green onions produced in this land are spicy, strong and have high yield.

Third, soil preparation and fertilization. Apply base fertilizer, 5,000 kilograms of decomposed farm manure and 50 kilograms of carbon-filled compound fertilizer with high phosphorus and high potassium per mu, spread the above fertilizers evenly on the border, then turn over 20-30 cm, and plow a ditch with a depth of 30 cm.

Fourth, timely planting. In the central and southern plain area of our province, the most suitable planting period for winter storage of green onions is generally from late June to early July. Transplanting is often used in production, and the green onion seedbed is watered for 2-3 days before emergence, so that the soil is kept dry and not wet, and it is not difficult to take seedlings and not to touch the soil. Do it with seedlings, and use seedlings. When sowing seedlings, the depth should be 7- 10 cm. Don't bury the heart leaves on the ground, because onion seedlings vary in size, and the lower parts should be kept neat and consistent.

Verb (abbreviation for verb) field management. After the seedlings of Chinese onion are planted, the old roots rot quickly. After 4-5 days, new roots sprout, new roots grow and new leaves begin to grow. The goal of early management of Welsh onion in winter storage is to promote root growth, one is to prevent waterlogging, the other is to loosen the soil. After autumn, the temperature gradually decreased, and the root absorption function turned into a vigorous stage. When it entered the Ye Sheng stage, the demand for water and fertilizer increased. During the period from beginning of autumn to Bailu, the principle of watering is "light watering, morning and evening watering", combined with water topdressing and "attacking leaf fertilizer", and decomposed farmyard manure 1.500 kg per mu is applied, and 20 kg of carbon, nitrogen and potassium fertilizer is added to promote the rapid development of leaves.

After the Millennium, the weather was cool and the temperature difference between day and night increased. Onion enters the formation period of scallion, which is also the key period of fertilizer and water management. From the Millennium to the autumnal equinox, available nitrogen fertilizer is the main topdressing, and urea is the best, and it is appropriate to apply about 20 kg per mu.

The principle of watering is "frequent watering and heavy watering", and the soil is always moist to meet the growth needs of green onions. After the first frost, the weather becomes cold, the growth of leaves slows down, and the transpiration of leaves decreases. Therefore, watering should be gradually reduced and stopped 7-8 days before harvest, so as to improve the storability of Welsh onion in winter storage.