造林措施对银杏用材林生长的影响  

Influences of afforestation measures on the growth of ginkgo timber forests

作　　者：刘莉娟[1] 邢世岩[1] 曹福亮[2] 汪贵斌[2] 李真[1] 付兆军[1] 吴岐奎[1] 刘晓静[1] 辛红[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018 [2]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《亚热带农业研究》2012年第4期241-245,共5页Subtropical Agriculture Research

基　　金：国家科技支撑计划课题(2012BAD21B04)

摘　　要：通过调查立地及各项生长指标,分析银杏用材林林木生长与立地条件、造林方式以及经营密度之间的关系。结果表明,高海拔与低海拔的银杏用材林生长差异显著,高海拔银杏用材林生长缓慢;嫁接苗与实生苗的高生长差异显著,嫁接苗木的径向生长较快,高生长受到抑制;在不同的年龄段,用材林适宜经营密度不同,随着年龄的增长,对生长空间的需求也增大,要适当加大用材林的经营密度。8-10年生银杏用材林以1.5 m×2.0 m、2.0 m×2.0 m 2种造林密度为宜。12-45年生银杏用材林以3.0 m×3.0 m和4.0 m×4.0 m 2种造林密度较适宜。The site conditions and various growth indexes were investigated to analyze the relation of ginkgo timber and volume growth to the site conditions, origin and management density. The results showed as follows. The difference between high altitude and low altitulte ginkgo timber forests was significant in their growth. Ginkgo timber forests at the high altitude grew slowly; and the difference in growth of height between grafting and seedling was significant. Radial growth of grafting nursery stock was rapid, but its height growth had been restrained; In different age, appropriate management density of ginkgo timber forests was different. As the growth of the age, the larger growth space was demanded, therefore the management density of ginkgo timber forests had to be prop- erly increased. The optimal planting spaces were 1.5 m ×2.0 m and 2.0 m ×2.0 m for the 8 to 10 years old ginkgo timber forests while the appropriate planting spaces were 3.0 m ×3.0 m and 4.0 m ×4.0 m for the I2 to 45 years old ginkgo timber forests.

关 键 词：银杏 用材林 造林措施 生长特性 

分 类 号：S725.71[农业科学—林木遗传育种]