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作 者 ：王勇^1,2;杨培岭¹;任树梅¹

期 刊 ：应用生态学报 2007年 18卷 03期 页码：514-518

关键词：大叶黄杨；

摘 要 ：通过田间试验,研究了FA旱地龙和BGA两种新型抗旱剂对大叶黄杨叶片光合特性的耦合影响.结果表明:FA旱地龙和BGA均能使大叶黄杨叶片的气孔导度(g_s) 和蒸腾速率（T_r）缩小，净光合速率（P_n）和P_n/T_r增加；受BGA影响，FA旱地龙对未施用BGA叶片g_s和T_r的抑制作用比对施用BGA叶片的抑制作用显著；FA旱地龙对未施用BGA叶片的P_n和P_n/T_r有促进作用，对施用BGA叶片的P_n和P_n/T_r有抑制作用；FA旱地龙对未施用BGA叶片的作用时间明显比对施用BGA叶片的作用时间长.BGA对FA旱地龙作用效果的影响原因可能与BGA和植物本身的光合特性有关.未施用BGA大叶黄杨适宜的FA旱地龙喷施浓度为2 g·L^-1，FA旱地龙不适宜于施用BGA的大叶黄杨.

Abstract:A field study on the coupling effect of new drought-resistant agents FA Handilong(FA
HDL) and Beijing Green Angel (BGA) on the photosynthetic characteristics of Euonymus japonicus
showed that these two agents could all decrease the stomatal conductance (g_s) and transpiration
rate (T_r), and increase the net photosynthesis rate (P_n) and P_n/T_r of E. japonicus leaves. The
inhibitory effect of FA HDL on g_s and T_r was more significant when BGA was not applied. FA HDL
inhibited the P_n and P_n/T_r when applied with BGA, but stimulated them when BGA was not applied.
Applying BGA could obviously shorten the action period of FA HDL on E. japonicus. The fact that
BGA could influence the effect of FA HDL was attributed to the properties of BGA and the
photosynthetic characteristics of E. japonicus. The appropriate concentration of FA HDL to the
E. japonicus without BGA application was 2 g·L^-1, and FA HDL was not appropriate to the
E. japonicus applied with BGA.

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