比较分析中国热带农业科学院橡胶树胶木兼优中心试验区7个参试品系2008年寒害后2 a内的生长及产量情况.结果表明:寒害后在茎围年均增粗上,品系间存在显著差异,热试8和热试l0生长速度较快,热试10在寒害后仍保持较快的增粗幅度;在年株产干胶上,各品系间存在显著差异.热试8及热试13显著优于对照,且2 a内的增产幅度较大,热试10与对照相当.综合分析,热试8及热试10在生长量及产量上均表现较优,符合胶木兼优选育要求,而且本次寒害适应性表现较好,建议根据品种特性在相同类型植胶区扩大试种试验.%The growth and yield of seven latex/timber clones were analyzed for two years stages after cold injury in 2008. The result showed that significant differences were found between testing clones in annual growth of stem girth. Although Reshi 8 and Reshi 10 both had rapid growth rate under normal conditions, Reshi 10 was the one with the fastest growth rate after cold stress. Significant differences were found in dry rubber yield between clones.The dry rubber yields of Reshi8 and Reshi 13 were significantly higher than those of the control. Renshi 8 and Reshi 13 showed great increase in yield after cold stress in the last two years. The dry rubber yield of Renshi 10 showed little difference with those of the control. In conclusion, Reshi 8 and Reshi 10 had fast growth rate and high yield which met the criteria of breeding programma of latex/timber clone. Reshi 8 and Reshi 10 were recommended to enlarge their testing area in plantations with the same climate conditions.
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