【摘要】 通过对黄土高原的 13种果树 (品种 )苗木蒸腾强度、气孔扩散阻力、叶水势及饱和亏缺的测定 ,结合苗木凋萎时土壤湿度的变化规律和形态观察 ,确定每种果树 (品种 )凋萎时的土壤含水量 .在同一土壤、气候条件下 ,不同果树 (品种 )有着不同的凋萎湿度 ,而且差异较大更多还原

【Abstract】 The wilting humidity of thirteen species (varieties) of fruit trees on the Loess Plateau was ascertained through the determination of the transpiration intensity, the diffusional resistance of stomata, the water potential of leaf, the saturation deficit of these fruit seedlings, and through the determination of the relevant soil water content and the observation of the morphological changes in the wilting course. The wilting humidity of different species (varieties) of fruit tree was different under the same soil and climate condition.更多还原