Chemical constituents from ethyl acetate soluble parts in roots of Angelica dahurica var. formosana Dynamic research of growth, N, P, K and active ingredients in Angelica dahurica var. formosana from Sichuan province Quantitative determination of six coumarins in Angelica dahurica var. formosana by RRLC-UV Chemical constituents from lipophilic parts in roots of Angelica dahurica var. formosana cv.Chuanbaizhi Chemical constituents from polarity part in roots of Angelica dahurica var. formosana cv.Chuanbaizhi Effect of different plant growth regulators on yield and quality of Angelica dahurica var. formosana development