螺旋环剥对龙眼幼树的促花增产效应与可溶性糖的相关性

本文针对龙眼北缘区幼树易抽晚秋梢和冬梢,影响花芽分化和开花结果,导致幼树投产迟、产量低等问题,采用螺旋环剥,对三个品种龙眼幼树进行试验研究,用环割及对照作比较,探索螺旋环剥的促花增产效应及其与叶片、根系可溶性糖含量变化的相关性。研究结果表明,对大乌圆龙眼结果幼树主干螺旋环剥,可有效减少地上部可溶性糖向根部转运,增加结果母枝叶片中可溶性糖的积累,从而促进花芽分化,显著提高成花率、坐果率、产量和品质。螺旋环剥、环割对不同品种及不同时段秋梢的促花效应存在较大差异。

Relation of spiral girdling of young Longan trees on hastening blossom,yield and soluble sugars

Relationship of three Logan varieties between hastening blossom and soluble sugars in leaves and root were studied using spiral-girdling compared with ringing and non-treatment in order to solve late-fruiting and low yield caused by fall and winter shoot flushing.It showed that soluble sugars were reduced from the overground to the root and accumulated in leaves using trunk spiral-girdling to Dawuyuan Logan.Therefore,flower bud differentiation was stimulated,and fruit-setting,yield and quality were all promoted.The results also showed that ringing and spiral-girdling differently affect different varieties' flower formation of different stage fall shoot.