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西双版纳垦区胶树产量明显地呈现双峰变化曲线,即3月至5月中旬为第一高产期,5月中旬至8月中旬为低产期,8月底至11月停割止为第二高产期,低产期与高产期的产量之差高达50％。根据调查研究认为,影响西双版纳垦区胶树产量季节变化的主要因素是气候,经测定,早晨八点前后林间气温与胶树堵塞指数成正相关(r=+0.83);堵塞指数与胶乳产量成负相关(r=-0.94);气温与胶乳产量成负相关(r=-0.9);上
The yield of the gum tree in Xishuangbanna reclamation area obviously showed a bimodal variation curve, that is, the first high yield period from March to mid-May, the low yield period from mid May to the middle of August, the second high yield period from the end of August to November , The difference between the yield of low yield and high yield of up to 50%. According to the investigation and study, the main factor influencing the seasonal change of the plastic tree yield in reclamation area of Xishuangbanna is climate. It was determined that there was a positive correlation between the forest air temperature and the rubber tree blockage index before and after 8:00 am (r = +0.83), and the plugging index and latex yield were negative (R = -0.94). The temperature was negatively correlated with latex production (r = -0.9)