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1974年7月我们根据《热带作物译丛》(1974年3月第2期第7页)关于“采用微型刈胶法的可能性”一文的报导后,便参考国外的方法,进行成龄橡胶无性系(PB86、PB5/51)针刺采胶探索性试验,由于效果显著,1975年扩大到不同品系(PR107、PB86)、不同施药浓度和方法、不同刺激剂(电石、乙烯利)和剂型(油剂、乳剂)、不同采胶方法(单线、近双线、近三线)、不同涂药带长度(10、20、30、50厘米)等一系列的小区比较试验。在此基础上,初步总结了乙烯利与电石双刺激、单线或近双线、长度36厘米,每次刺3孔或4孔的试验方法。1976年起,扩大到二个树位(PB86、RRIM600)的小型生产性试验,1977年,再
July 1974 After we reported on the article “Possibilities of using the micro-karching method” in the “Tropical Crops Collection” (No. 2, March 1974, page 7), we made reference to the overseas methods to carry out aging-type rubber Because of the remarkable effect, it extended to different strains (PR107, PB86) in 1975, different concentration and method of application, different stimulant (calcium carbide, ethephon) and (Oil, emulsion), different mining methods (single line, nearly two lines, nearly three lines), different coating with the length (10,20,30,50 cm) and a series of cell comparison test. On this basis, the experimental methods of double stimulation of ethephon and calcium carbide, single or near double line, length of 36 cm, three or four holes at a time were summarized. Small-scale productivity test expanded to two tree positions (PB86, RRIM600) since 1976, again in 1977