Liu Hong-Tao, Wang Yan-Wen, Huang Wei-Dong, Lei Mei
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
China Agricultural University, Beijing, 100083, China.
Environ Sci Pollut Res Int. 2016 Dec;23(23):24230-24236. doi: 10.1007/s11356-016-7676-z. Epub 2016 Sep 20.
Sludge is an organic waste after domestic sewage being treated and contains phytonutrients and organic matter. In this study, recycling of sludge compost (SC) and its compound fertilizer (SCF) to wine grape resulted in improvement in vegetative growth, reproductive development of wine grape, and potential wine quality of grape fruit. The amounts of Cu, Pb, and Cd in grape fruit were significantly higher in response to sludge amendment than in the control, but were all below the permissible limits for agricultural product. The contents of Cu and Pb in sludge-amended soil decreased with increasing soil depth, but Cd content increased with soil depth. Ongoing monitoring of on mobility of Cd downward is proposed with sludge recycling to wine grape soil.
污泥是生活污水经处理后的有机废弃物，含有植物营养素和有机物质。在本研究中，将污泥堆肥（SC）及其复合肥（SCF）施用于酿酒葡萄，可促进酿酒葡萄的营养生长、生殖发育，并提高葡萄果实的潜在葡萄酒品质。与对照相比，施用污泥显著提高了葡萄果实中铜、铅和镉的含量，但均低于农产品的允许限量。施污泥土壤中铜和铅的含量随土壤深度增加而降低，但镉含量随土壤深度增加而升高。建议在酿酒葡萄土壤中持续监测镉向下迁移的情况。
