摘要
分级造林能有效地减小杜仲林分个体间差异 ,提高林相整齐度。以苗高为指标 ,1年生杜仲实生苗的分级标准是 : 级苗高不低于 1.0 m; 级苗高 0 .6～ 0 .99m; 级苗高 0 .6
Afforestation with classification can effectively reduce the difference between Eucommia individuals and improve the regularity of.The height of seedling as the index,the classification standard for one-year seedling of Eucommia ulmoides is:band l isn′t lower than 1 0m;band 2 is 0 6～0 99m;band 3 is lower than 0 6m.
出处
《贵州林业科技》
2000年第1期43-45,共3页
Guizhou Forestry Science and Technology
关键词
杜仲
实生苗
分级造林
分级标准
Eucommia ulmoides,seedling,afforestation with classification.
