Dimitriou I, Eriksson J, Adler A, Aronsson P, Verwijst T
Department of Crop Production Ecology, Swedish University of Agricultural Sciences, P.O. Box 7016, S-750 07 Uppsala, Sweden.
Environ Pollut. 2006 Jul;142(1):160-9. doi: 10.1016/j.envpol.2005.09.001. Epub 2005 Nov 8.
Short-rotation willow coppice (SRWC), grown on farmland in Sweden for energy-biomass production, was fertilised with sewage sludge and wood-ash mixtures on the basis of the permitted annual phosphorus supply. Two identical experiments were conducted in central Sweden, on two newly harvested commercial SRWC fields. The maximum legally permitted amount of the sludge-ash mixture, sludge only, ash only, and twice the maximum permitted sludge-ash amount, were applied. The aim was to assess the effect of pH changes following treatment, on the ability of SRWC to take up large amounts of Cd and other metals. The remediation effect of SRWC was also studied. Under the experimental conditions applied, uptake by SRWC was unaffected by pH changes. The differences between the amounts of metals experimentally applied, less the uptake by SRWC after a potential harvest, were broadly within the permitted limits. For Cd, a reduction of total amounts in soil was observed.
短轮伐期柳树矮林（SRWC）生长于瑞典用于能源生物质生产的农田中，依据允许的年度磷供应量，用污水污泥和木灰混合物施肥。在瑞典中部两个新收割的商业SRWC田地上进行了两项相同的实验。施用了污泥-灰分混合物的法定最大允许量、仅污泥、仅灰分以及最大允许污泥-灰分用量的两倍。目的是评估处理后pH变化对SRWC吸收大量镉和其他金属能力的影响。还研究了SRWC的修复效果。在所应用的实验条件下，SRWC的吸收不受pH变化的影响。实验施用的金属量与潜在收获后SRWC吸收量之间的差异大致在允许范围内。对于镉，观察到土壤中总量有所减少。
