几个杨树品种1年生苗高度年生长规律的研究  

Study on Annual Growth of Main Poplar Species

作　　者：蔺林田[1] 

机构地区：[1]杨凌职业技术学院,陕西杨凌712100

出　　处：《陕西林业科技》2013年第2期13-15,共3页Shaanxi Forest Science and Technology

摘　　要：用Logistic方程对欧美杨107号等5个主要杨树品种1年生插条苗的年高生长规律进行了模拟研究。结果表明:Logistic方程能很好地表达5个杨树品种的苗高年生长动态,相关系数均达0.98以上;苗高生长期可划分为3个阶段,生长前期、速生期和生长后期,日生长量最大时间出现在第120d左右,速生期出现在第93d和142d之间,持续50d左右,占整个生长期的约24%,但生长量却约占年总生长量58%。Using the Logistic equation, simulation research on height growth of one-year cuttings which belong to 5 species of poplar including No. 107 populus euramericana. Result showed the logistic equation can explain the annual growth trends of the 5 species with the correlation coefficient exceeding 0.98;the seedling growth period can be divided into 3 stages, the first of which is pre-growing period, followed by fast-growing period and post-growing period;the biggest increment of growth appeared at 120th days,and fast-growing period was between 93rd and 142nd day,about 50 days taking up 24% of the whole growth period while the growth quantity reaching 58% of the annual total growth.

关 键 词：杨树 插条苗 高生长规律 LOGISTIC方程 

分 类 号：S718.3[农业科学—林学]