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应用多元统计分析中的主分量分析法对云南省建水县半干热地区7种造林树种的7个植物水分生理指标进行了综合分析。结果表明：恒重时间、束缚水与自由水比值、24小时保水力、水势及蒸腾强度是决定该半干热地区植物抗旱性的主导因子，其次是相对含水量、质膜相对透性。对所测植物进行了抗旱性排序。
The principal component analysis of multivariate statistical analysis was used to comprehensively analyze the seven plant water physiological indicators of seven afforestation tree species in semi-dry heat area of Jianshui County, Yunnan Province. The results showed that: constant weight time, ratio of irreducible water to free water, 24 h water retention, water potential and transpiration intensity were the dominant factors that determine plant drought resistance in this semi-dry area, followed by relative water content and relative permeability of plasma membrane. The tested plants were sorted for drought resistance.