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研究结果表明:(1)稀土元素对橡胶树的增产效果显著,可使干胶产量提高4.71～16.67%,干胶含量提高0.10～1.52%。(2)稀土水剂皮施的增产效果均达显著水平,而以0.5%硝酸稀土水剂每1～2月喷洒一次的效果最佳;(3)对允许施行乙烯利刺激的胶园,可采用2%乙烯利+1%稀土混合水剂涂施;(4)涂施高浓度稀土油剂会产生生产性危害。
The results show that: (1) The yield of rare earth elements on rubber trees is remarkable, which can increase the yield of dry glue 4.71 ~ 16.67% and the dry glue content 0.10 ~ 1.52%. (2) Rare-earth agent application has a significant effect on yield increase, while spraying 0.5% nitric acid Rare-earth agent once every 1 to 2 months has the best effect. (3) For the rubber plantation that allows ethephon to be stimulated, 2% ethephon mixed with 1% rare earth mixed agent; (4) Application of high concentrations of rare earth oil will produce a production hazard.