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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 %
In March 1999, Quercus mongolica (including 5 provenances of Quercus glauca and 2 provenances of Quercus acutissima) were established in the forest farm of Yixing City, and Pinus densa (hybrid F1, male and female) and control species Cyclobalanopsis glauca Quercus, Quercus mongolica and Pinus massoniana and other 14 treatments. Through 1a observation, there is a significant variation in the growth and preservation rates. (1) The growth variation of Quercus in the United States is extremely significant. The comparison among the species is Quercus glauca> Quercus acutissima> Cyclobalanopsis glauca. In the willow oak in 9818 the largest, 982 2 the smallest. There is no difference between the provenances of red oak. Afforestation survival rate was 95% ~ 100% due to container seedling afforestation, and the variation between species and provenances was insignificant. However, the variation rate of preservation rate was significant. The highest values were 98.0 0% ~ 90 0 0% for Quercus ileus 9816 and Cyclobalanopsis glauca, while the lowest for Quercus mongolica 982 1 and Quercus acutissima 982 3 was 65 70% ~ 65 80 %, Than the survival rate of afforestation is greatly reduced. (2) Hybrid F1 is the largest F1 generation, the father of this, the smallest female. No significant difference in afforestation survival rate and preservation rate, has remained at an average of 99 0%