Where is the origin of Salvia miltiorrhiza?

Salvia miltiorrhiza, also known as Red Salvia miltiorrhiza, Radix Salviae Miltiorrhizae, etc., is a perennial erect herb of the dicotyledonous plant Labiatae, Salvia officinalis, which has the effects of removing blood stasis, promoting blood circulation, regulating menstruation and so on. Due to the excessive mining of wild Salvia miltiorrhiza in successive years, the amount of wild resources is on the verge of extinction. Let's take a look at where Salvia miltiorrhiza is produced.

Where is the origin of Salvia miltiorrhiza?

The fleshy root of Salvia miltiorrhiza is thick, the stem is 40cm high, the leaves are often odd-pinnate, the verticillum is 6-flowered or many-flowered, the black nutlets are oval, the flowering period is from April to August, and the fruit is seen after flowering. It is distributed in almost every province, autonomous region and city except Heilongjiang, Jilin and Inner Mongolia, and is produced in Hebei, Shanxi, Shaanxi, Shandong, Henan, Jiangsu, Zhejiang, Anhui, Jiangxi and Hunan. It is also distributed in Japan.

Environment of producing area of Salvia miltiorrhiza

Salvia miltiorrhiza likes to grow in a mild climate, sufficient light and humid air. The area with an annual average temperature of 17.1 ℃ and an average relative humidity of 77% is the best planting area. It grows well in fertile sandy loam, but it has a wide adaptability to soil acidity and alkalinity, and wild Salvia miltiorrhiza can be grown by roadsides, slopes and rivers.

Propagation methods of Salvia miltiorrhiza

1. Split-root propagation: the root of Salvia miltiorrhiza, which is 0.7-1cm in diameter, purple-red, pest-free and fully developed, is selected as seed root in autumn harvest, and stored in wet sand until the following spring. From March to April in early spring, the seed root was cut into small segments of 4cm. According to the specification of row spacing of 35 cm × 25 cm × 6 cm, the cut root was placed vertically into the hole, one hole at a time, with the big head facing up, do not turn upside down, cover the soil about 2 cm, should not be too thick, otherwise affect the emergence of seedlings. Use about 50 kilograms of seed root per mu. When planted with root, it blossoms late, so it is difficult to receive seeds in the same year, but the root grows faster and the yield of medicinal materials is high.

2. Reed head propagation: when Salvia miltiorrhiza was harvested, strong and disease-free plants were selected to cut off thick roots for medicinal purposes, while fine roots with heart leaves were used as seedlings for planting. Large seedlings can be divided into 2-4 plants according to the natural growth of buds and roots, and then planted. Can also dig wild Salvia miltiorrhiza, thick root cut off medicine, fine root together with Reed head planting, plant, row spacing and split root propagation method is the same, the time should be in late autumn or early spring. Propagated with Reed head, it can be harvested in the next year after planting, with short production cycle and good economic benefits.

3. Cutting propagation: from June to July in the north and from April to May in the south, the sturdy and disease-free branches of Salvia miltiorrhiza were cut together and cut into small segments with a length of 13 cm to 16 cm, and the lower incision should be close to the stem node, showing a horseshoe shape. Cut off the lower leaves, according to the row spacing of 20 × 10 cm, insert the cuttings obliquely into the nursery bed, the depth of the cuttings is 2 × 2 + 3, the soil cover is pressed, and there are 1 × 2 leaves on the ground. Cut while inserting, can not be put for a long time, otherwise affect the survival rate of cuttings. After insertion, the soil is moist and shaded properly, and the new root can be produced from the lowest stem node in 15-20 days. When the root is 3 cm long, it will be placed in the field.

4. Seed propagation: the seeds of Salvia miltiorrhiza are small, the germination rate is about 70%, and the direct seeding method is often uneven, so the method of seedling raising and transplanting is often chosen. Seeds maturing after June should be selected and sowed along with picking or sowing in September. Generally sowing in the seedbed in March, strip sowing and sowing can be done. The plant spacing of the strip sowing line is 30 × 20 cm, the depth of the ditch is 1 × 1.3 cm, the seeds are mixed with river sand, scattered evenly in the ditch, and the soil is covered by 0.5 cm to 0.7 cm. Sowing can spread the seeds evenly on the ground and step on them once, so that the seeds are close to the soil and do not need to be covered with soil. The sowing amount per mu is about 0.5 kg. Cover with plastic film after sowing to keep warm and moisturizing. When the local temperature reaches about 20 ℃, the seedlings will emerge in 15-20 days. When the seedlings have 3 or 5 true leaves, if it is found that the seedlings are too dense, the seedlings can be planted and cultivated amateurishly. After 2 months of growth after sowing, it can be transplanted.