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对几个高产新品种橡胶树不同物候期叶片大量元素含量进行研究。结果表明,在一个完整的物候期内,热研8-79的氮、磷、钾,及热研7-33-97的氮极显著高于PR107;热研8-79的镁极显著低于热垦525,显著低于RRIM600;总体变化趋势,氮、磷相似,萌动期到淡绿期逐渐降低,淡绿期到老化期逐渐升高;钾从萌动期到淡绿期逐渐下降,淡绿期到稳定期逐渐升高,稳定期到老化期逐渐下降;钙的变化趋势和钾相反;镁的变化没有规律可循;元素含量都是氮>钾>钙>镁、磷。不同品种橡胶树在同一个物候期内,大量元素的相对变化率钾、钙、镁较大,氮、磷较小。
A few high-yielding new varieties of rubber trees in different phenological leaves of large quantities of elements were studied. The results showed that during a complete phenophase period, N, P, K, and Thermo-7-33-97 nitrogen rates of Thermo 8-79 were significantly higher than those of PR107; Magnesium of Thermo 8-79 was significantly lower than 525 in Heat Ken, significantly lower than that in RRIM600. The overall trend was similar between nitrogen and phosphorus, and gradually decreased from light green to pale green, and gradually increased from pale green to anaerobic; potassium decreased gradually from light to green, From the period of stable growth to the gradual increase of the aging period gradually decreased; the trend of calcium and potassium in the opposite; changes in magnesium law does not follow; elemental content is nitrogen> potassium> calcium> magnesium, phosphorus. Different varieties of rubber trees in the same phenophase, a large number of elements of the relative rate of change of potassium, calcium, magnesium larger nitrogen and phosphorus smaller.