How to grow Danshen: How to grow Danshen?

How to raise seedlings of Salvia miltiorrhiza? What is the best way to raise Salvia miltiorrhiza seedlings? Please introduce the method because after planting Salvia miltiorrhiza "seed root", it takes 25 seconds to emerge, and the field emergence rate is only about 60%. Especially in the case of poor soil moisture, the emergence rate is even lower, which is easy to cause lack of seedlings and broken ridges, thus affecting the increase of yield and the improvement of economic benefits. if you want to raise Salvia miltiorrhiza seedlings well, you can refer to the following methods: Salvia miltiorrhiza seedlings build bed: before and after stinging, choose leeward to sunny place. The nursery bed is 30 cm deep and 130 cm wide, and its length depends on the number of "seed roots". The surrounding walls are made of adobe, brick or wood plywood, with a height of 50 cm in the north wall, 20 cm in the south wall and a slope in the east and west walls. The bottom of the bed is covered with a layer of donkey horse dung or wheat straw about 7 cm thick as brewing heat, and then a layer of "nursery soil" mixed with fine sand, manure and fine soil, accounting for 1 / 3 of each. The manure and fine soil should be screened with a thickness of 15 cm. Salvia miltiorrhiza seedling on the seedling bed: the "seed root" of Salvia miltiorrhiza is cut vertically on the seedling bed, the row spacing is 10 cm, the plant spacing is 5 cm, the thick head is upward, and cannot be inverted. After cutting, cover with 1 cm thick fine soil, then gently pat flat, spray the bed surface with warm water of 30 ℃ and 40 cm, pour water thoroughly at one time, and cover with plastic film and plastic film after the water seeps. Salvia miltiorrhiza seedling management: cover the film tightly around the film, press it with mud, cover the film with grass felt, open the sun bed on a sunny day, and keep warm at night. The temperature in the bed should be kept at 20 ℃ 25 ℃. When the temperature in the bed is above 30 ℃, a small part of the plastic film at both ends of the bed should be opened in time for ventilation and cooling, and the seedbed should be kept moist. The seedlings began to germinate in 20 days, and the new leaves began to unfold in 30 days. When the seedlings were 2 mi 3 cm high, the seedlings should be exposed to sun at noon and covered with film at night. It would take 10 mi to dry seedlings for 15 days. Salvia miltiorrhiza seedling transplanting: when the seedling height is about 7 cm, it can be transplanted in the field. Before transplanting, pour enough water into the hotbed, dig the seedlings with a small shovel, and never pull them out by hand. Field planting should be ridged, with a ridge height of 20 cm, a row spacing of 40 cm and a plant spacing of 24 cm. After ditching, 50% carbendazim or 50% carbendazim 1.5 kg is used for every 15 ha of land after ditching, and soil disinfection is carried out along the ditch. Then plant seedlings, water, and cover the soil after the water seeps. Click to get more planting techniques of Salvia miltiorrhiza