龙泉市3种主要树种的容器苗与裸根苗造林对比试验

对杉木(Cunninghamia lanceolata)、马尾松(Pinus massoniana)、木荷(Schima superba)3树种进行树种与苗木类型双因素造林对比试验。结果表明,2.5年生时,树种间新梢高、地径和冠幅生长差异极显著,生长量大小为杉木>马尾松>木荷,树种与苗木类型间互作效应不显著,属树种的遗传效应;容器苗与裸根苗间新梢高差异极显著,地径和冠幅则差异不显著;经多重比较,容器苗平均新梢高生长比裸根苗增产30.3%,效益显著,其中杉木增产14.5%,马尾松增产34.9%,木荷增产51.9%。

Comparison Test on Afforestation by Three Species of Container and Bare-rooted Seedlings in Longquan

Comparison test with two factors(tree species and types of seedlings) was conducted on afforestation of Cunninghamia lanceolata,Pinus massoniana,Schima superba in Longquan,Zhejiang province.The result showed that it had great difference on new growth height,ground diameter and crown size among tree species 2 and half years later.The trend of increment of seedlings was as follows: C.lanceolata>P.massoniana>S.superba.It had no evident effect of interaction between two factors.It had great difference of new growth height,but no of ground diameter and crown size among types seedling.Multiple comparisons demonstrated that mean new growth height of container seedling was 30.3% higher than that of bared rooted ones,among which,14.5% of C.lanceolata,34.9% of P.massoniana and 51.9% of S.superba.