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Salvia miltiorrhiza cultivation technique four steps
First, the election of land preparation (1) Geological topography: It is better to choose sandy soils with deep soil, loose fertility, high topography and good drainage. Flatland should be used as a drainage ditch; mountains and ridges should be selected for low slopes in Xiangyang, and the slope should not be too large, 10-30 degrees is better. Soil organic matter content should be greater than 8 or more. PH value between 6.5-7.5. (2) Soil preparation and fertilization: Salvia miltiorrhiza is deeply rooted and is about 33 cm in diameter. Therefore, after the previous harvest, deep-slope the soil more than 35 centimeters, combined with site preparation, per acre applied into the decomposed manure or compost 2500-3000kg, plus superphosphate 50kg, turned into the soil as a base fertilizer. Before planting, plowing once again, the whole leveling is done, a 1.3-meter-wide sorghum is made, and a deep drainage ditch is opened around to facilitate drainage. Second, the cultivation method of seedling cultivation: Salvia miltiorrhiza seedlings survival rate is high, easy to reach seedlings, Miao Wang, Miao Zhuang, high yield and stability. Spring is planted in April-May and autumn is planted in late October. Should not be late as soon as possible, early transplanting, early rooting, early the next year back to green. When planting, dig a hole with a row spacing of 3,223 centimeters on the surface of the plant. The depth of the hole is determined according to the length of the root. The appropriate amount of manure is used as the base fertilizer at the bottom of the hole. After mixing with the soil and the hole, 1-2 plants per seedling are planted into the seed. The planting depth is based on the original natural growth depth of the seedlings, and the buds can be exposed slightly, and the rooting water is poured after planting. Planted on a large area can also be used for half-agricultured operations, where it is used to open trenches, artificial scattered seedlings, landfill and repression. Third, field management (1) loose soil weeding: Danshen early growth is slow, weeding in time to weed, generally before sealing ridge, combined with top dressing for 1-2 times, mulching after weed removal. (2) Timely top dressing: 50 kg of ammonium sulfate can be used in the middle of June. Shallow trenches are applied to the sides of the plants, then covered with soil. (3) Pest control: The main diseases and pests of Salvia miltiorrhiza are root rot and ground tiger. After the onset of root rot, the roots are black and rot, and the stems and leaves on the ground are withered. The disease is prone to occur in the hot and humid seasons from June to August. Control can be timely drainage, avoid continuous cropping, can be used 50% carbendazim 1000 times watering. The ground tiger harms the tender seedlings, and can use 3% malathion powder 1:10 mixed soil to spread poisonously between the rows. 4. Harvesting and processing (1) Harvesting time: Spring plants are planted in late autumn to early freezing, and autumn plants are planted during the first 10 to 11 months of the second year after planting, when the local stems and leaves are withered. First, dig the soil around the roots, turn them forward, and dig up the roots. Be careful not to keep the roots intact. Large-scale cultivation can be harvested by machine. (2) Processing method: After excavating the root strip, do not wash it with water. After removing hairs, repairing Lucy, and trimming the fine tail, spread it in a dry and ventilated place and dry it until it reaches 5-60%. After ~3 days, it can be sold until it is fully dried.