Management techniques of burdock at seedling stage

Burdock is a plant of the genus Burdock of Platycodon grandiflorum Compositae, also known as Dalizi and Panax quinquefolium. It is an excellent vegetable. At present, the main producing area of our country is in Shandong, and it has a long history and a large area. So do you know how to manage burdock at seedling stage? Let's get to know it with the editor.

1. Ventilation and seedling refinement

When burdock is cultivated in a small arch shed in winter and spring, generally there is no ventilation before emergence to promote early emergence. When the emergence reaches about 70%, it is necessary to ventilate and refine the seedlings in time, but the vents should not be opened too wide. If it is cultivated with plastic film mulching in early spring, the seedlings should be broken in time after emergence, so as not to burn the seedlings. And the use of open field cultivation, to maintain a good soil moisture, according to the soil moisture can be properly watered.

2. The seedlings are fixed

If it is cultivated in a small arch shed in winter and spring, it generally needs two seedlings in the whole seedling stage, three times in other sowing seasons, and three times in open field cultivation. Ah, when the burdock leaves unfold for the first time, the weak seedlings should be removed, and the seedlings should be planted again between the two true leaves. When the plant grows to 3-4 true leaves, determine the seedlings in time, and then get rid of some yellow seedlings, weak seedlings and seedlings with unbalanced leaf growth. When setting seedlings, the distance between seedlings is generally 25-30 cm.

3. Fertilizer and water

In burdock sowing to keep the soil moist, if the soil moisture is poor, you can open a ditch in the middle of the two lines of sowing ditch to pour small water, let the water slowly infiltrate in the sowing place, do not flood irrigation, to ensure comprehensive. After burdock emergence in autumn, the sunshade should be removed in time, the soil should be moist at the seedling stage, the soil should be properly sprayed in case of drought, and the burdock should be covered with a small arch shed in autumn to facilitate the early emergence of strong seedlings in spring and reduce freezing injury. Fertilizer and water management should be done well in early spring to promote the rapid growth of seedlings. After the temperature rises in April, the method of ventilation without uncovering the film should be adopted to gradually expand the plants and do a good job of ditch cleaning and drainage to avoid stagnant water and rotting roots.

The above is the introduction of burdock seedling management technology, hope to help you, want to know more related knowledge, please pay attention to us.