Field Management method of traditional Chinese Medicine Angelica dahurica

The classics of sex and taste: Xin, Wen. Return to the lung and stomach meridian. Dispelling wind and dispelling cold, dredging orifices and relieving pain, reducing swelling and expelling pus, dryness and dampness to stop belt. It is the root of Umbelliferae plants such as Angelica dahurica, Angelica dahurica or Niufangfeng in Yunnan, which mainly produces Yuzhou in Henan Province. Some provinces and regions in the north are cultivated, most of them are produced and sold by themselves, and a few are transferred to other provinces. The field management methods of Angelica dahurica are as follows:

1. Watering

Rain Water does not need watering where there is plenty of water, but in arid and semi-arid areas, deep water must be ploughed before sowing, and water must be watered in case of drought or prolonged drought after sowing. Soil moisture is not good, you have to water, about 4 times of watering can sprout, and then often keep the soil moist, to facilitate the growth of seedlings, Lesser Snow should be fully watered to prevent Angelica dahurica from drying to death in winter. The following spring watering before and after the Qingming Festival, can not be premature, the ground temperature is low, water cold seedlings are unwilling to grow. After that, water should be watered every 10 days, and in summer, it should be watered every 5 days, especially before Grain in Beard to Grain Rain, if the main root cannot be extended down with less water, the root will affect the yield more. It is more important to keep sufficient water in summer days, so that the seedlings should not sag because of lack of water, otherwise the Lignification of the main root will reduce the quality.

two。 Intermediate seedling

When the seedlings of Angelica dahurica dahur The seedlings with bluish white stems are selected to reduce the occurrence of Angelica dahurica in the future, in short, to maintain uniform seedlings.

3. Weeding and seedling intercropping in mid-tillage

The height of Angelica dahurica seedlings is about 5 cm in the same year, and the seedlings begin to grow. The first interseedling: 5-7 seedlings per hole sown in holes and 1 seedling every 3-5 cm in strip sowing. When the height of the seedling is about 10 cm, the second interseedling: 3-5 seedlings per hole sown in holes, and 1 seedling every 7-9 cm in strip sowing. Select the seedlings with bluish purple petioles. Seedlings whose petioles are bluish white or yellowish green and whose leaves are concentrated in the upper part of the seedlings will often blossom ahead of time in the future, resulting in hollow roots, which should be pulled out. The seedlings were fixed for the last time in the last ten days of February in the early spring of the following year: 3 seedlings per hole sown in holes and 1 seedling every 10-15 cm (that is, plant spacing) in strip sowing. The seedlings should be fixed according to the principle of "pulling out the big and leaving the small" to prevent Angelica dahurica from growing too vigorously, bolting and blooming. However, the principle of "pulling out the small and leaving the big" should be grasped for the seedlings that are not fertilized and grow weak after emergence during the year. Medicine farmers in Yuhang, the main producing area of Zhejiang, did not grow seedlings until the early spring of the second year, and the seedlings were not fixed until the Qingming Festival. It not only saves time, labor and cost, but also is more economical. After each seedling, intertillage and weeding were carried out for 1 time.

4. Topdressing

Scientific fertilization is the key to improve the yield and quality of Angelica dahurica. Angelica dahurica However, if you apply fertilizer blindly, especially in the seedling stage, if you fertilize too much and grow too much, it is easy to cause vine blossom and reduce yield; insufficient fertilization, poor growth, low yield. Generally topdressing for 4 times. For the first and second times, combined with inter-seedling, 1500 kg of thin human and animal dung water was applied per mu; after the third time, about 2500 kg of human and animal dung water per mu was applied, 30 kg of calcium superphosphate was added, and the fourth time after the Qingming Festival, 3000 kg of human and animal dung water was applied per mu, and 150kg of fire soil ash was added to the border, and then covered with soil. 5. Drainage and irrigation keep the soil moist in the field, and the soil is too dry, which is disadvantageous to the growth of main roots, increase the number of branched roots, and affect the yield and quality of Angelica dahurica. Therefore, in case of drought, it is necessary to irrigate in time and strengthen field water management. However, too much Rain Water, poor drainage and excessive humidity in the field will cause root rot and other diseases, so it is necessary to drain waterlogging in time. 6. From May to June of the following year, except for bolting seedling Angelica dahurica, a small number of plants grew too much and should be pulled out in time for bolting and flowering. Because Angelica dahurica once flowered will be hollow or rotten roots, can not be used for medicine; even the seeds, the germination rate is very low, can not be used for seed. 7. Intercropping in order to make economic use of land, intercropping can also be carried out in Angelica dahurica. In principle, short and small crops are better. After sowing, vegetables, such as kudzu bamboo shoots, spinach and garlic seedlings, are planted in the rows of Angelica dahurica. Intercropping crops must be harvested before the Beginning of Spring, in order to facilitate white growth, with spinach and garlic seedlings as the most. Spinach is planted between rows and garlic seedlings are planted every 3 centimeters.