Samples used in the experiment were collected from red soils with various fertility levels in the organge plantations of Jianyang and Chantai, Fujian. After the light fraction being removed from the soil, oscillation and ultrasonic dispersion were used to isolate the various organo-mineral complexes from heavy fraction in water. The main characteristics of vanous complexes are demonstrated as follows.
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郭成达.果园红壤有机无机复合体性质的初步研究[J].土壤学报,1993,30(4):406-415. Guo Chengda. A PRELIMINARY STUDY ON THE CHARACTERISTICS OF ORGANO-MINERAL COMPLEXES OF RED SOILS IN ORANGE PLANTATIONS[J]. Acta Pedologica Sinica,1993,30(4):406-415.