秃杉育苗微量元素优化试验研究

Optimal Component Ratio of Trace Elements for Raising Seedlings of Taiwania flousiana

摘要: 植物生长发育过程中需要一定的微量元素。本文探讨了圃地育苗中喷施锌(Zn)、锰(Mn)和硼(B)等3种微量元素对秃杉苗木生长产生的影响。通过调查分析,结果表明:追肥条件相同的情况下,3种微量元素对2 a生秃杉苗高、地径、分枝和侧根生长影响的最佳处理是A₁B₂C₂,即不施硫酸锌,喷施0.03%的硫酸锰和0.03%的硼酸的苗木生长最好,2 a生苗高达32.5 cm,地径达3.91 mm,分枝数为12.9枝,侧根数为7.3根。

Abstract: Plant growth requires a certain amount of trace elements.An experiment was designed in nursery in order to test the effects of Zn,Mn,and B on seedling growth of Taiwania flousiana. The results showed that these three trace elements had significant effects on the height,basal diameter,branch number,and lateral root of 2-year old seedlings under the same fertilization.The best performance of seedling growth happened in the treatment of A₁B₂C₂,where 0.03% MnSO₄ and 0.03% H₃BO₃ were sprayed without ZnSO₄.The growth indices of 2-year old seedlings reached average height of 32.5 cm,basal diameter of 3.91 mm,12.9 branches,and 7.3 lateral roots.