摘要
[目的]对不同郁闭度下无刺构骨的地径和株高进行研究。[方法]用游标卡尺和直尺分别测量各样方内无刺构骨的地径和株高。[结果]中度郁闭的无剌构骨生长状况最优,比最高郁闭度和最低郁闭度植株地径生长量分别增产38.8%和289.8%,株高生长量分别增产48.1%和163.2%。通过曲线拟合确定最适宜无刺构骨生长的林分郁闲度为0.534—0.566。[结论]不同郁闭度条件下同一立地条件、同一年生的无刺构骨地径和株高生长量上存在显著的渐变差异。
[ Objective ] Output of Llex cornuta ‘ Fortunei' under different canopy density was studied. [ Method ] Plam height and diameter of Llex cornuta ‘ Fortunei' were measured by vernier caliper and ruler. [ Result] The output of Llex cornuta ‘ Fortunei' with the middle canopy density turned out better than Llex cornuta ‘ Fortunei' with the highest canopy density and the lowest canopy density. Llex cornuta ‘ Fortunei' with the middle canopy density was 38.8% and 289.8% higher than the highest and the lowest canopy density on the ground diameter, was 48.1% and 163.1% higher than the highest and the lowest canopy density on the height. The fit canopy density for Llex cornuta ‘ Fortunci' is between 0. 534 and 0. 566. [ Conclusion] The ground diameter and height of Llex cornuta ‘ Fortunei' changed gradually obvious]y under differ-ent canopy density,with the same condition and are.
出处
《安徽农业科学》
CAS
2013年第19期8211-8213,共3页
Journal of Anhui Agricultural Sciences
基金
2012宿迁市科技局项目(L201217)"宿迁杨树林下树种选择与栽培模式研究"
关键词
无刺构骨
生长量
郁闭度
渐变
曲线拟合
Llex cornuta ‘ Fortunei'
Output
Canopy density
Change gradually
Curve fitting