Coptis chinensis Franch of 3,4 and 5-age years were given treatments with 5 levels of shading intensities 0, 30%, 45%, 60%, 75%.

• 摘要对三四五年黄连进行5个不同荫蔽度处理，分别是全光照，30%25，45%25，60%25，75%25，结果表明，三四五年生黄连最适荫蔽度分别为60%25，45%25和全光照。