Salvia miltiorrhiza breeding
(1) The rooting method: Select a new root that is robust, pest free, 0.7-1.0 centimeters thick, and cut into small pieces 5-7 centimeters long for use. Soil preparation for the ditch, a width of 1 to 2 meters wide, the length is not limited, the ditch depth of 20 cm, the surface must be smooth. Open a small groove 3–4 cm long on the surface of the urn, with a groove depth of 30 cm. The root segment was laid horizontally at the bottom of the small ditch with a spacing of 20 cm. Or slope the root section obliquely on the wall of the ditch, or directly on the ditch wall, (cannot be inverted) Finally cover the soil 7 cm to form a small ridge. The planting time is before and after the winter (mid-November) after the harvest of Salvia miltiorrhiza. In the spring of the second year, the seedlings emerged one after another, so the flowering was late, and even the seeds could not be received. However, the Salvia miltiorrhiza planted by this method has a faster root growth and can effectively increase the yield. In order to make early development of Danshen, production facilities can use film covering and plastic sheds (large, medium and small can be) for overwintering management, so that Danshen can be made early in spring to fully utilize light resources and increase production. (2) Seed propagation method: Firstly, the seeds of Salvia miltiorrhiza are harvested, seedlings are bred with seeds, and transplanted in fields. This method has a low production cost, a rich seed source, and a large area for production. The specific operations are as follows: To increase the germination rate, Salvia miltiorrhiza can be sown immediately after the seeds are harvested, and different nursery periods can be selected based on the crops and the local climatic conditions: After the Ching Ming area in the Central Plains area, the nakedness can be carried out before Bai Lu (from April to October). To grow seedlings, greenhouses and greenhouses can be used in winter or early spring. The dry weight of Salvia miltiorrhiza seeds is only 1.2 grams, and the general germination rate is 70%. Seedlings can receive better seeding effects within one year, but it is still best to use seeds in the same year. The seedbed of Salvia miltiorrhiza Bunge seedlings requires a high topography, loose soil, fertile soil, and a convenient land for watering. A slight shade condition is more conducive to emergence. The seedbed should first be fertilized, ploughed, smashed, troweled, smashed, and hoeed to a width of 1.5 meters. Salvia seed sowing is generally used sowing, but also useful for drilling. After the seeds are well-distributed, it is not necessary to cover the soil and use solid wood to keep the seed and soil tight. Must be sprinkled with straw after sowing in order to moisturize sunscreen. Regular watering after sowing keeps the surface and soil wet. If sowing in June, about 7-10 days will be able to emerge, it is necessary to promptly remove the soil table straw. After weeding, weeding should be carried out in time, and 3-5 seedlings of the seedlings should be transplanted. Interplanted shoots can also be transplanted in other plots. After the seedlings, they should be watered in time and topdressing once to facilitate seedling growth. Two and a half months after sowing can be transplanted, the standard seedlings are mainly 7-10 cm in length, about 7 mm thick, and about 13 cm long. Most of the transplanting time is from late October to early November, when rooting, survival, and flowering stems in the second year. According to experience, it is advisable that Salvia miltiorrhiza be transplanted earlier. Early transplanting of early roots, and early winter, it is already alive and has a certain degree of resistance, which is good for returning green in the early years of the year. Do not postpone transplanting to the cold season as much as possible. Density of transplanted Danshen seedlings. Also more flexible, depending on the conditions of the land and fertilizer, often used spacing of 20 cm 25 cm, 25 cm 30 cm and so on. When transplanting, you have to open a hole. The depth of the hole depends on the condition of the seedlings. Don't be too deep or expose the root. After the soil is buried, it should be solid and timely, and watering should be stable. (3) Reed-toe separation method: When harvesting Salvia miltiorrhiza, select robust and disease-free plants and cut off the rough root for medicinal purposes. The roots that are finer than the cigarettes, together with the leaves of the heart and the head of the reed (where the rhizomes are connected), are kept as seedlings for planting. Larger reed heads can be divided into 2-4 strains and then planted in order to increase the propagation coefficient according to the natural growth of buds and roots. The transplant density is the same as that of the seedling transplant. The transplant time can be performed in late autumn and early spring. (4) Cutting propagation method: The stem cuttings of Salvia miltiorrhiza can also be used for breeding purposes. The specific method of operation is to cut off the stalk section, each section with axillary buds and stem sections, timely watering after the plug, and maintain the humidity until it survives.
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