| 摘要: |
| [目的]探索5-氨基乙酰丙酸(ALA)在黄土高原育苗和造林中的使用效果.[方法]以紫穗槐种子为材料.采用土壤表面喷施和叶面喷施方法,研究了ALA对紫穗槐幼苗生长的影响;采用裸根苗直接栽植、裸根苗蘸根、裸根苗浸根和容器苗直接栽植、容器苗浇根5种方法处理苗木,研究了ALA对樟子松、油松和侧柏造林成活率的影响.[结果]在陕西关中进行紫穗槐播种育苗时,幼苗期喷施ALA溶液,刘幼苗生长有一定的促进作用,有助于提高幼苗质量,喷施浓度以300 mL/L为宜;土壤表面喷施的效果较好.盐碱地樟子松造林使用ALA可明显提高造林成活率,使用效果好于油松和侧柏;同一树种不同处理方法之间以及同一处珲方法不同树种之间的造林成活率有一定差异,但树种和处理方法之间存在比较明显的交互作用.用300 mL/L ALA溶液对樟子松进行裸根苗蘸根、容器苗浇根、容器苗直接栽植和裸根苗直接栽植处理,造林成活率可以提高到80%以上,对侧柏处理效果不明显.[结论]ALA对育苗和造林有一定的促进作用,可以有选择地使用. |
| 关键词: 盐碱地 造林 育苗 |
| DOI： |
| 分类号: |
| 基金项目:中日国际合作项目“ALA在造林中的应用”；国家“十一五”科技支撑计划项目“黄土高原水土流失综合治理工程关键支撑技术研究”（2006BAD09B03-03）；陕西省自然科学基金项目“黄龙林区退化天然林快速恢复及近自然经营”(2005C120)；西北农林科技大学科研专项“黄土高原天然林封育效果及快速恢复” |
|
| Effect of ALA on seedling and planting in salina soil |
|
|
| Abstract: |
| 【Objective】 The study was done to confirm the effect of ALA on seeding and planting on loess plateau.【Method】 Using ALA,the quality of the young seedlings of Amorpha fruticosa and the rate of forestation survival of Pinus sylvestris，Pinus tabulaeformis and Platycladus oriental were observed. 【Result】 The study indicated that spraying ALA solution on the leaves of Amorpha fruticosa was helpful for its growth in the period of the young plant on the campus of Northwest A＆F University,and the best spray concentration of ALA was 300mL/L.Comparatively,spraying ALA to soil was better than spraying it to leaves.In the region of saline soil in Yulin city, Shaanxi province,five methods of ALA treatment were used in the period of forestation of Pinus sylvestris，Pinus tabulaeformis and Platycladus orienta.The rate of forestation survival of Pinus sylvestris was higher than those of the other tree species.These five methods of treatment were common planting,dipping the root quickly,dipping the root for a long time,the container seedling planting and watering the container seedlings.The analysis of variation showed that dipping the root quickly can lead to a high rate of forestation survival of Pinus sylvestris and Pinus tabulaeformis.Meanwhile,the effect of ALA on Platycladus orientalis was not obvious.【Conclusion】 The effect of ALA on seeding and planting was very obvious,and can be selected in practice. |
| Key words: 5-aminolevulinic acide saline soil forestation seedling |
