Medicinal value of Codonopsis pilosula
The root of Codonopsis pilosula is used as medicine, which is sweet and flat. It has the function of tonifying spleen and replenishing qi, relieving thirst and promoting fluid. It is used for the treatment of weakness of spleen and stomach, deficiency of lung qi, weakness of body, shortness of breath and cough, weakness of language, blood deficiency, dizziness and palpitation, deficiency of fluid, dry tongue, thirst and so on.
The cultivation history of Codonopsis pilosula is relatively short, and the cultivation of Codonopsis pilosula has not been recorded in previous dynasties. Artificial cultivation of Codonopsis pilosula was the earliest in Shanxi Province. Changzhi County, Shanxi Province is the "hometown of Codonopsis pilosula" in China.
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The selection of Codonopsis pilosula
Codonopsis pilosula is a deep root plant, and adult plants like light, so it is appropriate to choose sunny sandy loam with deep and fertile soil layer. The sticky weight of low-lying waterlogged soil is not suitable for cultivation, water accumulation in the soil is prone to rotten roots, poor growth of aboveground plants, low yield and poor quality. It is suitable for slightly acidic to neutral soil with a pH value of 6.5-7. Legumes and Gramineae are the best crops in the previous crop, and the previous crops are prone to diseases in vegetable stubble, so it is not suitable to choose. Avoid continuous cropping, generally should be replanted every 3-4 years.
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Land preparation of Codonopsis pilosula
Spring flipping and autumn flipping are available, and autumn flipping is better. Before ploughing the land, spread rotten barnyard manure or compost 30,000-50,000 kg per hectare, then plough 25cm to 30cm, rake fine and level off. Codonopsis pilosula is suitable for border cultivation, with a width of 120 cm, high and dry terrain can be made into a flat border, and a lower terrain can be made into a high border of 10 cm to 15 cm. Ridge farming is also implemented in some places, in order to increase the number of plants per unit area, hit a small ridge of 50 cm, or hit a wide ridge of 60 cm, double-row planting.
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