摘要
本文利用光镜技术和MK-3型自动气孔计对松茶间作和单作茶园茶树叶片的解剖构造和气孔传导力进行了比较研究。研究表明,间作茶园茶树叶片的上表皮、栅拦组织和全叶均比单作茶树薄,分别为单作茶树的82.7％,78.2％和67.2％,叶质柔嫩。叶片气孔传导力比单作茶园低。嫩叶传导力>老叶;1芽5叶新梢按叶序3叶>2、4叶>1、5叶;按树冠垂直分布,冠上叶(0—5cm)>冠中叶(10—15cm)>冠下叶(30cm左右)。说明气孔传导力不仅受生态条件影响,与自身的叶龄、叶位等生理机能也有密切关系。
In this paper, stomatal conductance of leaves and anatomical structure of leaf surface in a pine-tea interplantation and a pure tea plantation are studied using MK-3 Antomatical Porometer. The results show that in pine-tea interplantation, the thickness of upper epidermis, palisade tissue and whole leaf are smaller than those in pure tea plantation, and are 82.7%, 78.2% and 67.2% of the latter respectively; the leaf is tender and the stomatal conductance is smaller; the productivity of spring shoots, the average daily shoot growth, and the hundred-shoot weight of tea are 34.8%, 30.4% and 9.4% of the pure planted tea respectively. The stomatal conductance of tender leaf is greater than that of old leaf. For a common shoot with 5 leaves, the stomatal conductance of the 3rd leaf is the greatest and those of 2nd and 4th leaves are greater than those of 1st and 5th leaves. Vertically, the leaves in the toppest part of canopy (0—5cm) have the largest value of stomatal conductance, and the leaves in the middle part (10—15cm) have larger value than those in the lowest part (about 30cm). It is concluded that the stomatal conductance of tea leaf is affected not only by common ecological factors, but also by some physiological mechanisms related to leaf age, leaf position etc.
出处
《应用生态学报》
CAS
CSCD
1991年第3期201-206,共6页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
关键词
松茶间作
茶树
解剖构造
气孔活动
Pine-tea interplantation, Interplanted tea plantation, Camellia sinensis, Stomatal conductance.
