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在福建省漳平五一国有林场,对美国引进的火炬松第1代种子园25个家系试验林进行测定,以湿地松、马尾松为对照。结果表明:火炬松早期生长较易感染松针褐斑病,保存率较低;14年生火炬松家系总体生长优于湿地松、低于马尾松;各家系在树高、胸径和材积等性状上有着显著差异;综合各性状共选择出4个优良家系(21、9、18、13号),14年生树高、胸径和单株材积的平均值分别为12.6 m、20.4 cm、0.1981 m3,比湿地松增长9.2%、25.9%、71.1%,遗传增益达8.9%、24.7%、67.9%。
Fifty-one state-owned forest farms in Zhangping, Fujian Province, measured 25 families of test-control forests introduced by the United States for the first-generation seed orchard of Pinus pine under the control of Pinus elliottii and Pinus massoniana. The results showed that the early growth of Pinus taeda was more susceptible to pine needle brown spot and the preservation rate was lower. The growth of 14-year-old Pinus taeda family was better than that of Pinus elliottii and Pinus massoniana. There were four significant families (21, 9, 18 and 13). The average values of tree height, DBH and single plant volume of 14-year-old trees were 12.6 m, 20.4 cm and 0.1981 m3 respectively Slash pine increased by 9.2%, 25.9% and 71.1% respectively, with genetic gain of 8.9%, 24.7% and 67.9%.