3Hunier A S,Kelley O 1. The extension of plant root into dry soil[J]. Plant Physiol, 1946,21 : 445-451.
4Breazele E L, Megeorge W T. Exudation pressure in roots of tomato plants under humid conditions Soil Sci, 1953,75 : 293-298.
5Baker J M. Van Bavel C H M. Measurement of mass flow of water in the stems of herbacious plant[J]. Plant Cell Environ. 1987.10 : 777-782.
6Caldwell M M,Richards J H. Hydraulic lift., water elflux from upper roots improves effectiveness of water uptake by deeproots[J]. Oecologia, 1989,79 : 1-5.
7Dawson T E. Hydraulic lift and water use by plants: implications for water balance, performance and plantplant interaction[J]. Oecologia, 1993,95:565-574.
8Vetterlein D, Masrschner H, Hom R. Microtensionmeter technique for in situ measurement of soil matric potential and root water extraction from a sandy soil ma trlc soil potential and root water extraction from a sandy [J]. Plant and Soil, 1993,149(2) : 263-274.
9Wan C G,Wenwei X,Ronald E S,et al. Hydraulic lift in drought-tolerant and susceplible maize hybrids[J]. Plant and Soil, 2000,219 . 117-126.
10Volk G M. Significance of moisture translocation from soil zones of low moisture tension to zones of high tension by plant roots[J]. Am Soe Agron, 1947,39. 93-97.
