论文部分内容阅读
对东台市林场9-2、4、69、创新、108、京2、美荷和北抗等8个杨树无性系1年生扦插苗的年生长节律进行研究,结果表明苗高和地径年生长量方差分析F值分别为2.80和3.10,供试无性系存在显著差异。多重比较结果显示,京2、创新、108和北抗等4个无性系苗高和地径的均值都超过69杨。苗高增幅分别为11.96%,10.48%,5.67%和5.27%;地径增幅分别为3.13%,7.50%,22.50%和6.25%。这为进一步选择适应当地土壤、气候和水分等条件的优良杨树品种提供了有益的参考。
The annual growth rhythm of 8-year-old cuttings of poplar clones of 9-2,4,69, innovation, 108, Jing 2, Meihe and Beikang of Dongtai was studied. The results showed that the annual growth rhythm The F value of variance of growth was 2.80 and 3.10 respectively, there were significant differences in clones. Multiple comparisons showed that the average height and diameter of four clones of Jing 2, Chuangxin 108 and Beikang exceeded 69 Yang. The increment of seedling height was 11.96%, 10.48%, 5.67% and 5.27% respectively; the increase of soil diameter was 3.13%, 7.50%, 22.50% and 6.25% respectively. This provides a useful reference for further selection of good poplar varieties adapted to local soil, climate and water conditions.