不同脱袋栽植方式对白蜡容器苗生长的影响

通过未脱袋去除容器底部、脱袋保留土球、脱袋抖落土球和未脱袋4种栽植方式进行容器苗造林,研究白蜡在晋北地区脱袋造林的效果。结果表明,在晋北地区,脱袋与不脱袋造林对白蜡株高与生物量的影响不显著。但脱袋后白蜡地上部分与地下部分生物量显著提高,根系生长更好。容器袋限制侧根生长,脱袋面积越大,侧根发育越好;保留土球(基质)能够提升地上部分与地下部分联系,促进根系发育,提高苗木抗逆性。因此,在晋北地区种植白蜡宜采用脱袋保留土球的造林方法。

Effects of Different Ways of Planting Without Bags on the Growth of Fraxinus Chinensis Container-seedlings

To study the effect of afforestation without bags of Fraxinus chinensis in the north of Shanxi Province,the container-seedlings were planted in 4 ways such as removing the bottom of the container without removing the bag,retaining the soil ball with removing the bag,shaking off the soil ball with removing the bag and not removing the bag.Results showed that the effect of bagging and non-bagging on plant height and biomass of Fraxinus chinensis was not significant in northern Shanxi Province.The biomass of aboveground and underground parts of Fraxinus chinensis increased significantly after bags were removed,and the growth of its roots were better.The larger the area of removing bag,the better the development of lateral roots because the container bag could limit the growth of lateral root.Retaining soil ball(substrate)could improve the connection between the aboveground part and the underground part.It could promote the development of root system and improve the stress resistance of seedlings.