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Variation of Evapotranspiration in Chinese Germplasm of Zoysia Willd
Author(s): 
Pages: 28-32
Year: Issue:  12
Journal: Water Saving Irrigation

Keyword:  Chinese Zoysia WilldGermplasm resourcesevapotranspirationvariation;
Abstract: 以园林绿化中广泛应用的“青岛结缕草”和马尼拉为对照,对中国结缕草属5种2变种32份野生种源的蒸散量进行了测定并分析.结果表明:结缕草属32份种源蒸散量变异范围为1.690~3.285mmol/(m2·s),变异系数为18.71%,结缕草属不同种源的蒸散量存在极显著的差异;不同种的蒸散量不同,其排序为:大穗结缕草>长花结缕草>青结缕草>沟叶结缕草>结缕草>中华结缕草>细叶结缕草,其中变异系数最大的为结缕草;结缕草、中华结缕草种内种源的蒸散量存在着极显著的差异,且结缕草种内的蒸散量差异高于中华结缕草种内差异.在32份供试种源中,蒸散量显著低于马尼拉的有7份种源,蒸散量显著低于青岛结缕草的有8份种源,蒸散量同时显著低于2个对照的有7份种源.中国结缕草属植物和中华结缕草的蒸散量与其地理分布无明显的相关性,结缕草的蒸散量与纬度呈极显著的负相关,与经度无明显的相关性.
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