Abstract
The drought resistance adaptation mechanism of highway greening plants was always the focal point which the researcher payed attention. This experiment took Cornus alba as the study object and examines its resistance to drought stress by using the potting and water control method. The researcher measured bond water content, water saturation deficit, relevant water content, relevant content of osmotic water, and osmotic potential when full turgor and turgor were both zero. Other water condition indexes also were analyzed systematically. Finally, a comprehensive evaluation on the drought resistance of Cornus alba by fuzzy mathematics’ anti-membership function was conducted. According to the experiment result, Cornus alba had the highest drought resistance at B-level treatment (soil water content: 53.60%), followed by D-level (soil water content: 29.90%) treatment. Cornus alba had strong endurance and resistance to drought stress. This study could provide a scientific basis for the future introduction of other urban greenbelt plants and the choice of excellent traits.
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