Licorice, also known as sweet grass root, is a medicinal plant of the leguminous family. It uses root and root strong stalks as medicine, and has the functions of replenishing spleen and replenishing qi, clearing heat and detoxifying the lungs, relieving cough and reconcile various drugs. Licorice enjoys a dry climate and extreme cold. It is suitable for deep soil, good drainage, low groundwater level, rich in sandy sandy soil, and neutral or slightly alkaline soil. Ground, high groundwater, and acidic soils are not suitable for planting. Licorice generally grows with strong stems. After harvesting the licorice in autumn or spring, the crude roots are used as medicine, and the fine roots are selected as the seeds and cut into small pieces of 10--15 cm each with 2--3 buds. In the fall, the soil is deep-turned 30--50 cm, and the base fertilizer is applied. The manure is applied to 2,500 kg per mu and 200 kg of superphosphate. The next spring, about the beginning of April, sowing, according to a row spacing of 30 cm ditch, ditch depth of 10 cm, according to the spacing of 10-15 cm will be flattened in the ditch, flat, filling pressure, watering, film , can also be concentrated seedlings, scattered transplanting, cultivation, with straw or mulch. Before and after the emergence of licorice should always keep the soil moist, in order to facilitate the production of seedlings and seedlings, drought should be timely watering. When the seedlings grow out of 2 or 3 true leaves, they need to carry out thinning, and the spacing of the plants is 10-13 cm after the seedlings are sown. The weeding period is followed by weeding. After the plants grow up, the strong stems are exposed on the ground and the soil should be properly cultivated. There is a large nest of grass that can be removed. In the winter, 2000--2,500 kg of earth miscellaneous fertilizer can be applied per acre. After two years of cultivation, the roots and stems of licorice have been covered with a whole lot of land, and no special management is required. Licorice has rust, brown spot, powdery mildew and other diseases and insect pests such as mites and spider mites. Rust is controlled with 0.30 to -0.40 degree lime sulfur or 97% dichlorphyrin 400 times; brown spot 1:1:100--160 Bordeaux or 70% thiophanate-methyl wettable powder 1500--2000 times Liquid control; Powdery mildew is controlled with 0.10 to -0.30 degree of lime sulfur; Aphids are treated with 50% of yam pine 1000--2000 times or 40% of Dimethoate 1500--2000 times; 20% of dicofol is used for spider mites. 1500--2000 times or 25% insecticidal water repellent 500 - 1000 times spray, once a week, several times in a row. Licorice can be harvested after 2 to 3 years, and harvested from the stems and leaves of the aboveground plants in late September and early October. Licorice roots are deep and must be excavated. They must not be planed or damaged. After excavation, the stems and soil should be removed. Do not wash with water. Fresh main roots and lateral roots should be removed from the roots. Dry them until they are half dry and tie them into small pieces. Dry medicine.
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