Effect of Different Treatments of Fertilizers on the Growth Increments of Taxus yunnanensis Seedlings
XU Yu-mei et al (Yunnan Academy of Forestry,Kunming,Yunnan 650204)
[Objective] The purpose was to research the effect of 16 kinds of base fertilizers and 1 control treatment on the growth of Taxus yunnanensis.[Method] The T.yunnanensis seedlings were bred by two-stage breeding method and the effect of different treatments on their growth increments was researched by single-factor randomized block design.[Result] The average tree height of T.yunnanensis of all the treatments was 125.1 cm and its changing range was 109.1-52.9 cm;their average ground diameter was 2.63 cm and its changing range was 2.29-3.02 cm.The average dry weight of aerial part of T.yunnanensis seedlings in the 17 treatments was 225.4 g and its changing range was 122.0-389.0 g;their average dry weight of underground part was 108.4 g and its changing range was 84.1-128.0 g;their average dry weight of whole plant was 333.8 g and its changing range was 206.1-517.0 g.Compared with CK,the tree height,ground diameter,dry weights of aerial part,underground part and whole plant of T.yunnanensis seedlings in the treatment of 4.8 kg ox dung + 3.0 kg serrago per plant were increased by 40%,32%,219%,52% and 151% resp.[Conclusion] The comprehensive appearance of T.yunnanensis seedlings in the treatment of 4.8 kg ox dung + 3.0 kg serrago per plant in their growth period was best.