热研8-79旺产期开割树产胶生理特性研究初报

以我国中规模推广级早熟高产品种热研8-79旺产期开割树为材料，测定了产量、干含、蔗糖、无机磷、硫醇和镁离子等指标变化，以期研究该品种的生理特性和对s/2d/3+ET1%刺激割胶制度的适应性。结果表明，无刺激条件下，相对于生理基本平衡的RRIM600品种，热研8-79具有高糖、高硫醇和高产的特性；刺激后产量增加不明显，胶乳的稳定性增强，但糖和干胶含量有所下降，显示出部分疲劳生理效应。根据该品种产量很高、较易死皮的特点，生产中刺激割胶应遵循低浓度低频率原则，同时必须加强施肥，提高管理水平。

Primary Study on Physiological Characteristics of Tapped Reyan 8-79 at High Exlploition Stage

With early maturing， high yield and moderate scale rubber clone Reyan 8-79 at high exlploition stage as the material，dynamic rules of dry rubber content ， contents of sucrose，phosphorus ，thiol and Mg2+ were studied in this experiment which hoped to explorer physiological characteristics and adaptability to lower frequency tapping system 。The results showed that : Relative to basically phiological equilibrium clone RRIM600,it had many excellent physiological characteristics of high sugar and yield without stimulation ; in the condition of stimulaton system of s/2d/3+ET1%, the yield increased insignificantly, whereas latex stability enhanced, tire effects of decreasing low contents of sugar and dry rubber appeared in the same time. According to the clone characteristics of high yield, easily bark dryness, lower tapping frequencies ,smaller dosages should be taken in tapping production while combined with strengthening fertilizer, improving management level.