How to manage Angelica dahurica after planting?

How to manage Angelica dahurica after planting? Please guide Angelica dahurica da Before and after Lesser Snow, cover the border with a layer of soil fertilizer or horse dung, not only heat preservation, but also fertilize the field, after thawing in the next spring, flatten the border surface and repair the ridge. Angelica dahurica Intermediate and fixed seedlings: when the height of the seedlings is 6-10 cm, the seedlings are fixed according to the distance of about 10 cm. When fixing the seedlings, remove the oversized and weak seedlings and keep the strong seedlings. If the seedling is too large, it is easy to bolt and blossom and bear seeds, and the root will wither and cannot be used as medicine. Combined with shallow loose soil for weeding, it is necessary to water less after setting seedlings, and generally hoe the land for 6-7 times during the growing period, so as to keep the soil loose and free of weeds. Topdressing: scientific fertilization is the key to improve the yield and quality of Angelica dahuricae dahurica Topdressing 4 times during the whole growth period, the first and second times combined with inter-seedling, applying 1500 kg of thin human and animal manure water each time, applying 2500 kg of human and animal manure water per mu, adding 30 kg calcium superphosphate per mu, and the fourth time in the rhizome expansion period. 3000 kg of human and animal manure water per mu, plus 150kg of kitchen ash, sprinkled on the border and covered with soil after application. Extraction of bolting seedlings: Angelica dahurica Because Angelica dahurica once flowering is hollow or rotten root, can not be used medicinally, even the seeds do not germinate, can not be used as a seed. Pest control: angelica dahurica da Adopt fitness cultivation. That is, through a series of cultivation and management measures, such as selecting resistant varieties, crop rotation, watering and fertilization, Angelica dahurica da Click to get more planting techniques of Angelica dahurica