学术
摘 要:
泸定县大渡河流域属干热干旱河谷地带，常规育苗造林成活较差。本文使用云南松、辐射松、岷江柏3种树种开展营养袋育苗和大田育苗进行对比试验，试验表明3种树种的营养袋育苗较常规育苗在出苗率、1a生苗高、地径、须根长度、须根数量等方面，其增幅都在20％-71％间，差异显著；同时在对三种树种采用雨季营养袋造林和常规裸根造林对比试验中，结果表明前者较后者在当年成活率，年均高生长、年均地径生长，3a保存率，都有着显著差异，且营养袋造林成活后抗逆强、生产成本低、经济效益显著，值得广泛推广。[著者文摘]
文章出处:
《四川林业科技》-2007年28卷2期 -57-60页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1003-5508（2007）02-0057-04
Research on Seedling Raising in Nutritional Bags and Afforestation Technology in the Rainy Season in the Dry-hot River Valleys of the Dadu River in Ludlng County
QIU Xian-hui （ Forestry Bureau of Luding County,Luding 626100,Sichuan）
Abstract:
The Dadu River valley in Luding County belongs to the dry-hot river valley area where the survival rate of afforestation is very low with conventional seedlings. In order to raise the survival rate of afforestation, a comparison was made between the conventional seedling raising and the seedling raising in nutritional bags on Pinus yunnanensis, Pinus radiata and Cupressus chengiana. The results showed that the rate of sprouting, the seedling height, the diameter at ground, the length and number of fibrous roots with seedling raising in Nutritional bags were by 20% -71% higher than those with the conventional seedling raising,exhibiting a significant difference. Contrast afforestation results of Pinus yunnanensis ,Pinus radiata , and afforestation, the estation for three Cupressus chengiana with their two different seedlings indicated that the survival rate of height increment, the diameter increment at ground and the preservation rate after afforyears with seedlings in nutritional bags were higher than those with bare root seedlings.[著者文摘]
Key words:
Nutritional bag, Afforestation in the rainy season, Survival rate, Preservation rate
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