9[6]Haynes RJ.Active Ion Uptake and Maintenance of Cation-anion Balance,A Critical Examination of Their Role in Regulating Rhizosphere PH.Plant Soil.1990,126:247~264.
10[10]Luna CM,Gonzalez CA.Troppi VS.oxidative damage caused by an excess of copper in oat leaves.Plant Cell Phsiol.1994,35:11~15.