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在红壤柑桔上施用污泥复肥 ,与施化肥相比 ,柑桔产量及果实品质指标(Vc、糖分、有机酸)无显著差异。但柑桔果实中汞、锌含量增加 ,汞含量超过安全食用标准 ;土壤中重金属含量亦呈上升趋势。
Applying sludge compound fertilizer on the citrus in red soil showed no significant difference in citrus yield and fruit quality index (Vc, sugar, organic acid) compared with chemical fertilizers. However, the content of mercury and zinc in citrus fruit increased, and the mercury content exceeded the standard for safe consumption. The content of heavy metals in soil also showed an upward trend.