不同容器规格对樟子松育苗质量的影响
2021-09-12李日
李日




摘 要 为探索樟子松( Pinus sylvestris var. mongolica)容器育苗的合理容器规格,以白色无纺布袋作为育苗容器,按照育苗容器口径和高度不同,设置6 cm×10 cm、10 cm×10 cm、12 cm×15 cm、15 cm×18 cm 4种容器规格,研究了不同容器规格对樟子松幼苗质量的影响。结果表明:随着容器规格的增大,樟子松幼苗的株高、地径、主根长、植株干鲜质量、根冠比和壮苗指数均呈增加趋势,但12 cm×15 cm和15 cm×18 cm两个规格容器对樟子松幼苗各项指标的影响差异不显著,而樟子松幼苗根系活力、可溶性蛋白和丙二醛均随着容器规格的增大呈先增加后降低趋势,并以12 cm×15 cm效果最佳。研究认为12 cm×15 cm规格的容器更适宜培育樟子松容器苗。
关键词 樟子松;容器育苗;容器规格;根冠比;壮苗指数;生理指标
中图分类号:S723.1 文献标识码:A doi:10.13601/j.issn.1005-5215.2021.02.009
Abstract In order to explore the reasonable container size of Pinus sylvestris var. mongolica container seedlings,the white non-woven cloth bag was used as the nursery container,the effects of container size on seedling quality of Pinus sylvestris var. mongolica were studied by setting 6 cm×10 cm,10 cm×10 cm,12 cm×15 cm and 15 cm×18 cm container size according to different container diameter and height. Result shows that with the increase of container size,the height,diameter,main root length,dry and fresh weight,root-shoot ratio and strong seedling index of Pinus sylvestris var. mongolica seedlings increase,however,there is no significant difference in the effects of the containers of 12 cm×15 cm and 15 cm×18 cm on the indexes of Pinus sylvestris var. mongolica seedlings,while the root activity,soluble protein and Malondialdehyde of Pinus sylvestris var. mongolica seedlings increase at first and then decrease with the increase of the container size,the optimal effect is 12 cm × 15 cm. In view of cost saving,12 cm ×15 cm container is more suitable for Pinus sylvestris v ar. mongolica seedlings.
Key words Pinus sylvestris var. mongolica;container seedling-raising;container size;root-shoot ratio;seedling index;physiological index
传统的苗木培育以裸根苗为主,在移栽过程中受环境因素、机械损伤的影响,导致造林成活率和保存率较低,影响整个营林造林工程的开展[1,2]。容器育苗是一种新型育苗技术,是指采用各种容器进行苗木培育的方式[3],在营林造林过程中,不仅提高了苗木移栽的成活率,简化了苗木移栽步骤,还具有运输便捷、抗逆能力强、移栽时间不受季节限制、移栽后无须返苗、成林时间快等优点,实现了苗木培育的标准化和规模化发展[4,5]。在生产实践中,育苗容器的规格选用与苗木的品种、培育时间、苗木的大小等有关,育苗容器过小会限制苗木根系的生长,从而阻碍了容器苗的健康生长,最终影响了容器苗的品质。目前,育苗容器材料、規格选择的研究已经是园林行业上共同关注的焦点[6,7]。……
