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STUDIES ON GENERAL WATER ECO-PHYSIOLOGICAL CHARACTERISTICS OF CASUARINA SEEDLINGS
Author(s): 
Pages: 148-150,163
Year: Issue:  z2
Journal: PROTECTION FOREST SCIENCE AND TECHNOLOGY

Keyword:  木麻黄水势水分饱和亏缺保水力束缚水;
Abstract: 在温室条件下,通过测定苗木叶水势、水分饱和亏缺、叶失水速率、水分释放曲线和束缚水含量等指标,探讨4种木麻黄的水分生理生态特性.结果表明,木麻黄苗木叶水势与土壤水势呈显著的指数关系,与水分饱和亏缺呈紧密的线性关系,叶水势的日变化呈单峰型.从苗木叶水势和水分释放曲线的变化动态,及叶失水速率与束缚水含量等指标来看,4种木麻黄维持水分平衡的机制较为相似,但不同木麻黄树种在水分亏缺条件下吸持水能力存在明显的差异.
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