马来西亚橡胶研究院在六十年代中期,由于博特曼(Boatman)对Tjir 1“阶梯式”排胶曲线的发现,使排胶生理的研究揭开了新的一页,其中,堵塞指数概念的引入和应用对橡胶栽培学的理论研究和生产实践都产生了深远的影响。 本文,通过对排胶堵塞指数的测定,研究了我所现有一些品系的排胶特点,以及季节性产胶变化规律的原因,在产排胶理论研究和指导割胶生产方面都起了一定的作用。 Malaysian Rubber Research Institute In the mid-1960s, the discovery of the “tie-down” of Tjir 1 by Boatman opened a new page in researches on the excludability physiology, in which the concept of plugging index The introduction and application of rubber cultivation of theoretical research and production practices have had a profound impact. In this paper, through the determination of the plugging exudation index, we studied the characteristics of the gum removal of some of our existing strains and the reasons for the seasonal variation of gum production. All these played a certain role in the researches on the theory of gum production and the guidance of tapping production effect.