小黑杨、北京605杨、北京3号生长节律的研究

对小黑杨、北京605杨、北京3号杨的生长节律进行研究；并对实验数据作了统计分析，试图用数据来表示出在年周期内，各阶段（旬）树高生长量的变异程度及其原因；从而确定上述杨树品种系在佳木斯地区的年高生长高峰时间。同时也探讨了旬序、积温、降水、日照时数与树高生长量之间的定量关系，为更科学合理地采取管理措施提供理论依据。

The Research On The Growth Rhythm Of Populus Simonii × P. Nigra Populus Beijingensis 605 And Beijing -3

Making analysis on the growth rhythm of populus simonii x p. nigra,populus beijingensis 605 and beijing - 3, the particle also analyzes the experiment data to describe the variation degree and reason for the growth of the different procedure in the whole period to determine the maximal infection time of the height growth for the different species of poplar. At the same time ,the quantitative relation among accumulated temperature.precipitation and sun- shine duration is discussed to provide theoretical basis for the making perfect measurement.