宜兴市引种美国栎属种源和杂交松试验初报

A preliminary study on the introduction of American Oaks and hybrid Pinus taeda×P.rigida in Yixing Jiangsu China

于 1999年 3月在宜兴市林场建立美国栎属 (包括柳叶栎 5个种源、红栎 2个种源 ) ,杂交松(杂种F1代 ,父本、母本 )以及对照树种青冈、麻栎、小叶栎和马尾松等共 14个处理的引种试验林。通过 1a观测 ,其生长和保存率存在显著变异。 (1)美国栎属生长变异极显著 ,树种间比较是柳叶栎 >红栎 >青冈。在柳叶栎中以 9818号最大 ,982 2号最小。红栎种源间无差异。造林成活率由于是采用容器苗造林 ,达 95 0 0 %～ 10 0 0 0 % ,种间和种源间变异不显著。但保存率变异显著 ,以柳叶栎 9816号和青冈最高 ,为 98 0 0 %～ 90 0 0 % ,红栎 982 1号和柳叶栎 982 3号最低 ,为 6 5 70 %～6 5 80 % ,比造林成活率有很大降低。 (2 )杂交松F1代最大 ,父本次之 ,母本最小。造林成活率和保存率差异均不显著 ,一直保持在平均 99 0 0 %

A plantation of American Oaks and hybrid Pinus taeda L.× P.rigida Mill.for species and provenance trial was established in March 1999 in Linian Forest Farm(at 34°45′N.,118°38′E.)Donghai county Jiangsu China.The study was conducted on the comparative performance of 15 provenances of American Oak species[9 provenances of Wellow Oak( Quercus phellos) 3 provenances of Northern Red Qak( Q.rubra L ),3 provenances of Scarlet Oak( Q.coccinea) ] and hybrid F 1( Pinus taeda L.×P.rigida Mill.)and male (P.taeda L.),female(P.rigida Mill.).Trees were planted as one year old container seedlings in pits 40 cm in deep and 40 cm in diameter at spacing of 3 5 m between rows and 3 m between trees in a randomized complete block design with 4 replications.There were 22 plots in a replication and 24 trees per plot.The results of observation indicated that there were significant variations in performance of growth and survival among different species and provenances of American Oaks.The most fast growing provenance was Wellow Oak No.9818 and the slow growing provenance was Wellow Oak No.9811.There was no significant variation among provenances within species of Scarlet Oak & Northern Red Oak.The most adaptable were Wellow Oak No.9816 and No.9818.The preformance of hybrid F 1 P.taeda L.× P.rigida Mill.was better than male ( P.taeda) L.and female ( P.rigida Mill.).