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乳管的产胶能力主要取决于对乳管的糖的供应。而这种供应受到多种因子的影响,其中最主要的是受光合活动和韧皮部中糖的运转的影响。常规割胶时割去了韧皮部组织,因而严重地削弱了糖的运转。树皮消耗越多,其影响就越大。 这些观察结果引起了人们对不伤害输导系统采胶技术的研究:在用乙烯利处理的垂直带进行多点针刺采胶的试验,已取得令人鼓舞的效果。1973年的实践证明,一改无性系GT1的常规割胶为在再生皮上方的原生皮上针刺采胶后,大大地改善了乳管中糖的供应,并使胶乳的总固形物保
Dairy production capacity depends mainly on the milk supply of sugar tube. And this supply is affected by many factors, the most important of which are affected by the photosynthetic activity and sugar in the phloem operation. Conventional tapping removes the phloem tissue, severely impairing the functioning of the sugar. The more bark it consumes, the greater its impact. These observations have led to research into plastic-harvesting techniques that do not compromise the delivery system: encouraging results have been achieved with the multi-needle apical sequestration of the vertical strips treated with ethephon. The practice in 1973 proved that the conventional tapping of a modified GT1 clones greatly improved the supply of sugar in the milk tube and improved the total solid content of the latex