造纸污泥堆肥农用对酸性土壤性质影响研究

通过玉米盆栽试验，研究了添加富含铝盐的造纸污泥堆肥对酸性赤红壤理化性质的影响。结果表明，添加造纸污泥堆肥能有效减缓土壤酸化，增加土壤有机质和有效磷含量，提高土壤质量；同时添加堆肥的各处理土壤中的总酸溶性铝和总单核铝浓度在盆栽初期较CK有显著增加，并随堆肥用量的增加而增加，但随着玉米生长时间推移，各处理（除了CK）总酸溶性铝和总单核铝浓度明显下降，在盆栽结束时各处理总酸溶性铝浓度均低于原赤红壤中总酸溶性铝浓度，可见造纸污泥堆肥农用不会对酸性土壤形成活性铝累积问题。

The Influence on Red Soil Added with Paper Mill Sludge Compost

The paper concerned on the influence on red soil when paper mill sludge compost （PMSC） was used in a pot maize experiment. The experiment result showed that pH , organic carbon （OC） concentration and effective phosphate concentration of red soil increased after added with PSMC; The active aluminum concentration of treatments added with PMSC was also higher than CK, but the former decreased more sharply than latter during cultivating; At the end of planting, the active aluminum concentration of treatments added with PMSC was almost equal to the original red soil, which mean there was no active aluminum remaining in soil.