Veratrum nigrum is born in hillside forest or grass at an altitude of 1200-3300m. Northeast China, Hebei, Shandong, Henan, Shanxi, Shaanxi, Inner Mongolia, Gansu, Hubei, Sichuan and Guizhou. It is also distributed in northern Asia and central Europe.
Medical uses: roots and rhizomes are used as medicine to induce vomiting, eliminate phlegm and kill insects, mainly for the treatment of phlegm obstruction, epilepsy, laryngitis and so on. Externally used to treat scabies, malignant sores and maggots.
Extended data
Cultivation methods of veratrum nigrum. Mosaic;
1, soil treatment: evenly mixing peat soil, humus soil, pine needle humus soil and clay to obtain cultivated soil, evenly spreading sulfur powder on the cultivated soil, and standing for 1 day to cultivate veratrum;
2. Selection and cutting of cuttings: select excellent plants with strong growth, no pests and diseases, strong adaptability, strong germination ability and strong ornamental as female parents;
3. Disinfection and treatment of cuttings: firstly, the base of cuttings is immersed in 0. 1-0.2% potassium permanganate aqueous solution for disinfection for 0.5- 1.5h, after disinfection, the cuttings are continuously washed with sterile water for 3-5 times, and then soaked in 100-200mg/L indobutyric acid solution.
4. Cutting: In July-65438+10, select the annual semi-lignified branches of Veratrum nigrum 8- 13cm, and cut them after pretreatment. The specific steps of pretreatment are as follows: removing redundant leaves from the obtained branches, leaving 2-3 leaves at the top, then soaking in disinfectant for 1-2 hours, and then taking out and draining the liquid on the surface.
5. Daily management: pruning, weeding, fertilizing and watering;
6. Pest control: Spraying pesticides on the branches and leaves of Veratrum nigrum in the summer evening when there is no wind or rain.
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