8个杨树无性系1年生幼苗生长节律研究

为进一步选择伊犁州适生杨树无性系,采用随机区组试验,对8个杨树无性系1年生扦插苗进行苗高和地径的生长节律研究。结果表明:各无性系苗高和地径生长均为“S”形生长曲线,各无性系之间差异不显著;171、LX-1和TL-3的苗高年生长量均高于对照,分别为362.90、305.79和303.94 cm,较对照增加21.27%、2.19%和1.56%,TL-3和LX-1达到了显著水平,171达到了极显著水平;171、DX-08-8和TL-3的地径年生长量均高于对照,分别为2.26、1.93和1.92 cm,较对照增加36.90%、16.73%和16.33%,均达到极显著水平。无性系171和TL-3苗期在本地表现出较好的适应性,1年生苗年生长量均优于本地良种日本白杨。

Growth Rhythm of One-year-old Yong Seedlings of Eight Poplar Clones

In order to further select the suitable poplar clones in Yili Prefecture,a random block test was used to study the growth rhythm and ground diameter of one-year-old cuttings.Result shows that the seedling height&ground diameter growth curves of all clones are“S”type growth curves,and there is no significant difference between the clones;the annual growth of seedling height of 171,LX-1 and TL-3 is higher than the control,respectively 362.90,305.79&303.94 cm,an increase of 21.27%,2.19%and 1.56%over the control,TL-3 and LX-1 reach significant levels,171 reach extremely significant levels;the annual growth of ground diameter of 171,DX-08-8 and TL-3 is higher than that of the control,which is 2.26,1.93,and 1.92 cm respectively,which is an increase of 36.90%,16.73%,and 16.33%compared with the control,and all reach extremely significant levels.The clones(171&TL-3)show optimal adaptability at the seedling stage,and the annual growth of one-year-old seedlings isoptimal than that of local good-looking Japanese poplar.