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[目的]探究几种常见菊科绿化植物的光合、蒸腾特性与抗旱性关系的比较。[方法]测量常见菊科小丽花、矮翠菊、黄晶菊与金盏菊的光合、蒸腾等生理特性,对其抗旱能力做出详细分析。[结果]对比3种双峰曲线绿化植物,小丽花的蒸腾速率日平均值最低,其净光合速率与蒸腾速率的比值(Pn/Tr)最高,其次为矮翠菊、而金盏菊Pn/Tr的值最低。气孔导度反映了气孔开张程度,小丽花、矮翠菊与金盏菊都在上午、下午出现2个峰值,但小丽花的第1个峰值出现在12:00。[结论]小丽花在参试绿化菊科植物中的抗旱能力最强。
[Objective] The research aimed to explore the relationship between photosynthesis, transpiration and drought resistance of several common asteraceae plants. [Method] The physiological characteristics of photosynthesis, transpiration and other common flowers of Compositae Xiaolihua, Dwarf Aster, Huangjingju and Calendula officinalis were measured and their drought resistance was analyzed in detail. [Result] Compared with the three bimodal green plants, the average daily transpiration rate of Xiaolihua was the lowest, and the ratio of net photosynthetic rate to transpiration rate (Pn / Tr) was the highest, followed by dwarf aster and Calendula officinalis Pn The value of / Tr is the lowest. Stomatal conductance reflects the degree of stomatal opening, Xiaolihua, dwarf aster and calendula both in the morning and afternoon there are two peaks, but the first peak of Xiaolihua appeared at 12:00. [Conclusion] Xiaolihua had the strongest drought resistance ability in the test of greening Compositae.