MySheen

Cultivation and Management of Angelica sinensis

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, The transplanted seedlings loosen the soil and weed for 3 times in one year, and the first time when the seedling height is 3~5cm. After weeding, topdressing was applied for the first time, 1500kg to 2500kg of sparse human and animal manure per 667m2, and 2500~3000kg for rotten stable manure, compost or fire soil ash per 667m2 for the second and third times. Bolting seedlings should be removed in time and watered during drought, but watering is prohibited in the later stage so as not to cause rotten roots. Early bolting: the key problem of Angelica sinensis in production is early bolting (in the year of transplantation). General early smoking

The transplanted seedlings loosen the soil and weed for 3 times in one year, and the first time when the seedling height is 3~5cm. After weeding, topdressing was applied for the first time, 1500kg to 2500kg of sparse human and animal manure per 667m2, and 2500~3000kg for rotten stable manure, compost or fire soil ash per 667m2 for the second and third times. Bolting seedlings should be removed in time and watered during drought, but watering is prohibited in the later stage so as not to cause rotten roots.

Early bolting: the key problem of Angelica sinensis in production is early bolting (in the year of transplantation). Generally, the early bolting rate is 30%, and the serious bolting rate can reach more than 50%. Bolting Angelica sinensis root firewood, light smell, lack of oily, poor quality, can not be used as medicine. The reason leading to the early bolting of Angelica sinensis is that in ontogeny, from non-bolting to bolting, we need to go through two stages: vernalization stage and light stage. The former requires a low temperature of 0.5 ℃, while the latter requires long sunshine of more than 12 hours. Under natural conditions, low temperatures come from winter, and long sunshine is required around summer. The annual Angelica sinensis can be passed by long-day sunshine in the summer of the year, and the reason for not bolting is that it has not gone through the low temperature in winter. However, after winter storage, not all of the plants can bolt and blossom through the vernalization process. Angelica plants need to have enough sugar through the vernalization process. Enlarged plants are easy to bolting, while small plants are not easy to bolting.

In order to reduce the early bolting of Angelica sinensis, the seedling size was controlled by improving the seedling technique to achieve the purpose of controlling bolting. Some technical measures can be taken:

First, it is appropriate to choose the semi-shady slope and the alpine mountain area with medium soil fertility, or postpone the sowing and breeding period, control the seedling age within 70 days, and make the seedling root diameter about 3.5mm. The method of direct broadcast after the Beginning of Autumn can also be used to make the early bolting rate very low.

Second, when transplanting in the second year, it is best to plant it on land with deep, loose, fertile and well-drained soil. After slowing down the seedlings, strengthen the fertilizer and water management, make the seedlings grow healthily, make the roots obtain a large number of assimilation products, in order to improve the yield and quality of the medicinal parts.

Third, the seedlings were frozen and stored at a low temperature of about-10 ℃ until the following spring. Because the seedlings can not get the necessary conditions of vernalization, the stage change can not be realized and the bolting rate is reduced.

 
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