1Uren N C,Reisenauer H M.The tole of root exudates in nutrient acquision[M].In:Tinker,B.and Lauchli,A.(ends).Advances in Plaunt Nutrition Vol3.Praeger Publishers New York,1988:79-114.
2Chou C H,Leu L L.A llelopathic substances and activities of Delonix regia Raf(1)[J].Chen.Ecol,1992(18):353-367.
3Tang C S,Takenaka T.Quantitation of a bioactive metabolite in undisturbed rhizo sphere-benzyliso thiocyanate from Carica Papayal (1)[J].Chen.Ecol,1983(9):1247-1253.