To solve the problem of cutting difficulty of Taxus mairei,the effects of different exogenous hormones,mass concentration and soaking time on cutting rooting of Taxus mairei in river sand matrix were studied,so as to provide data and theoretical support for cutting propagation technology of Taxus mairei.The 1-year-old branches of 10-year-old Taxus mairei were selected as experimental materials,and the orthogonal test L9(34)design was used.Three kinds of exogenous hormones such as ABT-1,IBA and NAA with different mass concentrations were soaked for 10 s,30 min and 5 h,respectively,and the cuttings were cut in river sand matrix.The survival rate,roo-ting rate,average rooting,average root length,maximum root length and root effect index of Taxus mairei were determined.The range,variance and principal component analysis were used to screen out the best combination for cutting rooting of Taxus mairei.The results show that the survival rate,rooting rate,average root length and longest root length of 1-year-old Taxus mairei branches dipped in 1000 mg/L NAA for 10 s(A3B3C2)were the highest.The root effect index of branches dipped in 200 mg/L ABT-1 for 30 min was the highest.The average rooting number of branches dipped in 500 mg/LABT-1 for 10S(A1B2C2)was the highest.The comprehensive a-nalysis showed that the combination of A1B1C1 was the best combination for the rooting effect of Taxus mairei.
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