鄂北岗地美洲黑杨及杂交无性系对比试验

Contrast Experiment on Populus deltoides Marsh. and Hybrid Clones in Upland Area in Northern Hubei

摘要:

通过20个美洲黑杨及杂交无性系岗地造林对比试验,对不同无性系的物候期、保存率和生长量进行观测分析,结果表明:不同品系保存率差异达到显著水平;不同品系生长量差异达到极显著水平;不同品系冠高、冠幅差异达到极显著水平;生长量、冠高、冠幅相关方差分析,均达到极显著水平,生长量与物候期之间未达到显著水平;抗虫害比较品系间差异不显著,抗旱性比较国内系列较从日本引进的品系耐旱,DD89-23无性系生长快、干形好、适应性强,平均单株材积比中潜3号高10.00%,为鄂北岗地及低山营造丰产林提供种质材料和依据。

Abstract:

Contrast experiment on afforestation in upland area by 20 Populus deltoides Marsh.and Hybrid clones,based from analysis of phenophase,survival rate,growth of different clones,the results showed that differences of survival rate of different clones to reach significant level,differences of growth,crown height and crown width of different clones to reach very significant level.Correlation variance analysis of growth,crown height and crown width,they all reached very significant level except for growth and phe...