【摘要】 用石腊切片法进行茶树对夹叶成因的解剖学研究，结果表明：对夹叶成熟度高于同龄一芽二叶；输导组织相对面积，嫩茎＞主脉＞叶柄；对夹新梢输导组织、木质部和韧皮部相对面积大于一芽二叶新梢，嫩茎木质部导管成熟度较一芽二叶新梢高．因而从解剖学上证明对夹叶是一类先行功能叶，其形成是茶树自身对体内物质代谢的平衡调节．因此，新梢休止的瓶颈理论不能圆满地解释对夹叶的成因．更多还原

【Abstract】 The mechanism of banjhi formation in tea bushes is studied using anatomical method.It is revealed that:①the banjhi has a higher level of maturity;②as far as the area percentage ofconducting tissue in cross-section concerned,the green stem>the main veins>the petiole in se-quence;③the percentage of areas of the conducting tissue, xylem and phloem in cross-section ofthe banjhi are significantly higher than those of the two leaves and a bud shoots,and④maturity ofxylem in the green stem of banjhi is at a high level.These results suggest that anatomically thebanjhi acts as a kind of premature functional leaf and that the banjhi formation is an iriternal char-acteristic and physiological adjustment of tea plant for its metoblic equilibrium.It also seems thatthe mechanism of the banjhi formation in tea bushes can not be entirely explained using the theoryof growgh periodicity.更多还原