马来西亚橡胶研究院进行了评价乙烯丰、乙烯附和乙烯达(Ethadac)(注:乙烯达=乙烯附+渗透剂)的大面积评比试验,采用三种割胶制度,RRIM605、RRIM623已有五年的记录,PB5/51也有四年半的记录。试验结果表明,RRIM605和RRIM623采用短割线1/3树周隔日割制(即S/3,d/2,67％),在第四割面割胶,乙烯附和乙烯丰两种刺激剂的刺激效应都较好。而在S/4,d/2(2×2d/4),50％割制下,由于割线都在第三割面的较低部分,因此对这些无 The Malaysian Rubber Institute has conducted a large-scale review of the ethylene abundance, ethylene and ethylene (Ethadac) with three tapping systems, RRIM605 and RRIM623, which have been recorded for five years , PB5 / 51 also have four and a half years of record. The results showed that RRIM605 and RRIM623 were cut by short cut line 1/3 tree (ie, S / 3, d / 2,67% The effect is better. While in the S / 4, d / 2 (2 × 2d / 4), 50% cut, since the secant is in the lower part of the third cut surface,