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柠条的水分生理生态学研究表明.蒸腾速率为395.1±234.4mg·g-1·h-1(平均值±标准差);小枝水势为-1.588MPa;叶含水率为60.12±3.29%;蒸腾系数为72.82±19.88gH2O·gDW-1。林地土壤水分含量与蒸腾速率、小枝水势和叶含水率的关系十分密切。响应于年生长发育节律和水分条件的变化,柠条的抗旱性在年生长期初(5月)和旺盛生长阶段(8~9月)较弱.在高温干旱阶段(6~7月)和入冬之前(10月)较强。在年生长期中间(6~9月),柠条的抗旱性与蒸腾速率、小枝水势和叶含水率之间均具有负相关性。
Physiological and ecological research of Caragana korshinskii showed. The transpiration rate was 395.1 ± 234.4 mg · g-1 · h-1 (average ± standard deviation). The branchlet water potential was -1.588 MPa. The leaf water cut was 60.12 ± 3.29%. The transpiration coefficient was 72.82 ± 19.88 gH2O · gDW-1. The relationship between soil moisture content and transpiration rate, branchlet water potential and leaf water cut is very close. In response to changes in annual growth and development rhythm and water conditions, the drought resistance of Caragana korshinskii was weaker in the early growing season (May) and the vigorous growth stage (August-September). In the high temperature and drought stage (June to July) and before winter (October) stronger. In the middle of the annual growth period (June-September), there was a negative correlation between the drought resistance and the transpiration rate, the branchlet water potential and the leaf water cut of the Caragana korshinskii.