Objective: To investigate effects of artificial vine cutting method on output

quality and seed yeild of Baitiao Codonopsis Radix. Method: By taking seed yield

output and quality as indexes

top of climbing vine of Baitiao Codonopsis Radix was cut when stems and leaves flourished.At the first time the top 30 cm was removed on the middle of July while the second time the top 20 cm was removed on foundation of growth after the first cutting on the beginning of August.Seeds and plants from the middle of October to the beginnning of November were collected

seed yields and outputs per unit and qualities of Baitiao Codonopsis Radix were determined by comparing with the natural growth plants. Result: Seed yields of the plants in the first period were 21.4% over those of the normal plants with natural growth

seed yields of the plants in the second period were 16.5% below those of the normal plants with natural growth.Increase of output per unit in the first period was 25%-35% and artificial vine cutting had little influence on quality of Baitiao Codonopsis Radix. Conclusion: Cutting vine can control output and seed yields per unit area of Codonopsis Radix in Gansu effectively

which can meet rules of quality standards in the 2010 edition of Chinese Pharmacopoeia

this study provides a reference for good agricultural practice(GAP) planting of Baitiao Codonopsis Radix.