兴凯赤松3个中国种源及家系苗期试验

在天然分布区以外进行引种试验,连续3 a的试验结果表明:兴凯赤松种源间以及种源内家系间苗木高生长差异达显著水平,且苗高生长节律与樟子松相近。各种源兴凯赤松播种后出苗均较快,9月末苗高基本停止生长,越冬前能及时封顶,可以安全越冬。苗圃育苗1 a和2 a生苗木高生长差别较小,但Msn(密山)种源3 a生苗高生长较快。在干旱的立地条件下进行人工林培育,Jdg(鸡东)种源表现出较大的生长潜力,其中部分家系高生长甚至超过CK(樟子松青山种源),地径生长量与CK基本相近。表明其生长潜力和抗旱、耐瘠薄能力远远高于Msn种源,是值得重视的种源。

A Prelimiary Study of Provenance and Family Testing of Pinus ussuriensis at Nursery

Pinus ussuriensis was introduced outside its natural distribution area.The results showed that the differences of height growth among provenances and among families within provenance reached significant level and its growth rhythm was similar to P.sylvestris var.mongolica.All provenances of P.ussuriensis germinated soon after seeded and height growth ceased in the end of September,and the terminal bud ceased growth before winter so as to protect freeze injury.The difference of height growth among provenances was minor for 1 and 2-year-old seedlings,but for 3-year-old seedlings,Msn provenance grew faster than other provenances.When cultivated in droughty soil,the provenance of Jdg might growth better,some families could grow higher than CK,the P.sylvestris var.mongolica of Qingshan provenance,indicating that the provenance of Jdg was a remarkable provenance with good virtues of fast growing,drought resistance,and barren tolerance.