摘要：Biosolids are relatively
rich in N, P, and S and could be used to substitute
mineral fertilization for banana crop. A field
experiment was carried out in a Yellow Oxisol to
investigate the effects of biosolids application on
soil chemical properties and on banana leaf's
nutrient concentration during the first cropping
cycle. Soil analysis (pH, organic matter, resin P,
exchangeable Ca and K, available B, DTPA-extracted
micronutrients, and heavy metals) and index-leaf
analysis (B, Cu, Fe, Mn, Zn, Cd, Cr, Ni, and Pb) were
evaluated. Biosolids can completely substitute mineral
N and P fertilizer to banana growth. Soil exchangeable
K and leaf-K concentration must be monitored in order
to avoid K deficiency in banana plants. No risk of
heavy metal (Cr, Ni, Pb, and Cd) concentration increase in
the index leaf was observed when biosolids were applied
at the recommended N rate.
