1厚朴每年春天在树干上用利刀将树皮纵割2～3刀,可使树皮的营养物质积累增加,树皮增厚,提高树皮产量。2细辛不采种的多年生植株在早春及时摘除花蕾有利长根,可提高根的产量和质量。3西洋参非种子田,当花茎抽生1～2厘米时,选择晴天摘除,平均根重可提高5.27%。 1 Magnolia every spring on the trunk with a knife bark longitudinal cut 2 to 3 knife, can increase the accumulation of nutrients in the bark, thickened bark, improve bark output. 2 Asarum not planted perennial plants in early spring removal of buds favorable root, can improve root yield and quality. 3 American ginseng non-seed field, when the stems pumping 1 to 2 cm, choose sunny removal, the average root weight can be increased 5.27%.