What are the reasons for early bolting of Angelica sinensis? How to prevent and cure?

Bolting occurs when planting tufted plants. Among them, bolting will also occur when planting common Chinese herbal medicine Angelica sinensis. If Angelica sinensis occurs bolting and flowering earlier, it will lead to non-medicinal use and cause economic losses to farmers. So what are the reasons for early bolting of Angelica sinensis? How to prevent and cure it?

What are the reasons for early bolting of Angelica sinensis?

1. Improper cultivation

The possible reason for early bolting of Angelica sinensis is that the sowing time is too early, which will lead to higher early bolting rate, in which the sowing density is too high, there will be early bolting phenomenon, and early transplanting is also prone to bolting. The bolting rate of plants with excessive flower fertilizer was significantly increased, and phosphate fertilizer had a certain effect on bolting of Angelica sinensis. When it is in the vegetative growth period and high temperature and dry climate, its bolting rate will also increase significantly.

two。 Ecological factors

The possible cause of early bolting of Angelica sinensis is the influence of planting land. When planting on the sunny slope with low altitude and high temperature, it is easy to cause drought, and it is very easy to cause early bolting at this time. Its bolting rate will reach its peak when the daylight lasts for more than 14 hours. If you plant Angelica when there is early bolting, see if it is caused by ecological factors.

3. Nutritional factors

The early bolting of Angelica sinensis is also related to the size and quality of seedlings. At the same seedling age, the heavier the seedlings are, not only the bolting process will be accelerated, but also the bolting time will be earlier. In addition, early bolting was also related to nitrogen content and sugar content of seedlings.

The above three points are some of the reasons for early bolting of Angelica sinensis.

2. Prevention and control of early bolting of Angelica sinensis.

1. Select and retain improved varieties

Under the same cultivation conditions, the seeds of early bolting and flowering plants generally have the character of early maturity and are easy to bolting and flowering. Therefore, in order to improve the seedling quality and reduce the early bolting rate, the seedlings must be planted in the current three-year-old field with large roots, strong growth, late flowering, moderate seed maturity (fish belly white) and uniform seeds.

two。 Sowing at the right time

When the seedlings were raised with three-year-old seeds, the seedling age was more than 130 days, the early bolting rate was more than 90%, and there was almost no early bolting phenomenon when the seedling age was less than 70 days. But the seedling age is too small, the seedling root weight is small, the survival rate is low, the growth is weak, the yield is low and the benefit is poor. In order to control large seedlings and old seedlings and reduce the rate of early bolting and flowering, the sowing date should be postponed appropriately, the seedling age should be controlled within 110 days, and bolting and flowering should be inhibited.

The editor reminded: in order to prevent early bolting of Angelica sinensis, good varieties should be selected when planting, seeds that are not easy to bolting should be selected, and sowing should be timely, large seedlings and old seedlings should be controlled, and the rate of early bolting and flowering should be reduced. The sowing time should be postponed and the seedling age should be controlled within 110 days. The seedling weight is less than 40 grams. In the later stage of seedlings, proper application of nitrogen fertilizer should be applied to increase the nitrogen content of the plant, reduce the sugar content of the plant, and inhibit bolting and flowering. In addition, the density should be controlled when sowing, the general amount of seeds per mu is 6-10 jin, not too much, lest the density is too high and bolting easily.

The above is the introduction of the early bolting prevention and control methods of Angelica sinensis.

Summary: the above content is the introduction of the causes and prevention methods of early bolting of Angelica sinensis, which is sorted out by the editor of Tuliu.com, hoping to help the growers in need. This paper is integrated with the Internet.