Applications of nuclear magnetic resonance in the study of soilplantatmosphere continuum. 陕西渭北旱源土壤—植物—大气连续体中水分运转规律的研究──Ⅱ.生态和生理环境对植物叶水势的影响 Research progress on regulation mechanism for the process of water transport in plants Advances in the Studies on Water Uptake by Plant Roots SIMULATION ON WATER AND HEAT DYNAMICS IN SOIL-PLANT-ATMOSPHERE CONTINUUM 陕西渭北旱源土壤—植物—大气连续作中水分运转规律的研究──Ⅲ.生态和生理环境对叶片气孔阻力的影响 陕西渭北旱塬土壤-植物-大气连续体中水分运转规律的研究──Ⅰ.生态环境对植物叶温的影响