According to the production experience, the Chinese herbal medicine stems will be changed to summer sowing and planting in spring, the seedlings will grow fast, the survival rate will be high, the yield will increase by more than 25%, and the roots produced will have fewer tillers, good quality and high prices.

In the middle and late June, ploughing and soil preparation, applying 750,000 kg of fertilizer or cyclization per mu, 25 kg of ammonium phosphate, 1 meter wide sorghum, 30 cm in width, 7.5 kg per mu (transplantable 10) About 3-4 acres of fine soil or fine sand, and mix well and spread it into the sorghum surface to cover the fine soil or fine sand. If the seeds are not seen, then cover 2 cm thick straw or wheat straw. If the soil is dry after sowing, it should be watered on the surface in the morning, and keep the surface moist. After 10 days, Qimiao can be produced (15 days earlier than the spring sowing). When the seedling height is 1-1.5 cm, the rice straw or straw is gently pulled out in the evening to remove the field weeds in time. In late July and late August, each fertilizer will be topdressed one at a time, each time, 10 kg of ammonium diammonium phosphate and 10 kg of urea per acre will be sprayed on the surface of the loquat in the morning or evening during drought, and the root rot will be discharged in a rainy day to prevent root rot.

Seedlings in seedlings are dense and have long, slender roots, which can prevent seedlings from sparse seedlings during direct seeding, thus laying the foundation for high yields and quality. In mid-November, the roots can be transplanted when they are 0.3-0.5 cm thick and 20-35 cm long. Before transplanting, use 2500 kg of soil miscellaneous fertilizer per acre or mix with 25 kg of diammonium phosphate per acre to spread evenly, and then make a flat rake with a width of 1.3 meters with a spacing of 15 cm and a spacing of 4 - 5 cm transplanting, water immediately after planting. Seedlings naturally winter in the fields, and they begin to grow before and after Qingming the following year. 6-9 months is the peak season for the growth of Platycodon grandiflorum. In late May and late July, each fertilizer should be topdressed one at a time. Each time, 15 kg of ammonium phosphate and urea are applied per acre, and field management is strengthened. It can be harvested from late October to mid-November.

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