通过测定分析不同产量水平的橡胶树(PB86)在刺激周期内每次割胶时砧木胶乳中干含、总固形物、硫醇、糖、无机磷等养分的含量,探讨砧木养分与橡胶树产量间的关系.结果表明:产量高的橡胶树砧木胶乳中干含、总固形物、硫醇、糖的含量也较高,其中超高产橡胶树与对照的差异达极显著水平;同时,高产橡胶树与对照间的干含、总同形物含量达到极显著水平;砧木中无机磷的含量则表现为超高产橡胶树最低.%The change of latex nutrient in rootstock on supper-high-yield, high-yield and CK rubber tree (PB86) was applied for exploring the relationship between rootstock and yield. The dry rubber content, soluble solids content, thiols content, sucrose content, and inorganic phosphorus content in rootstocks of each tapping were determined during the period of stimulus tapping. The main results showed that the nutrient content of higher yield rubber trees such as the dry rubber content, soluble solids content, thiols content and sucrose content in rootstock were higher relatively, and that for the supper-high-yield rubber trees were very significantly higher than the CK. The dry rubber content and soluble solids content for high-yield rubber trees were very significantly higher than the CK while the inorganic phosphorus content in the rootstock of supper-high-yield trees were the lowest.
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