中文摘要：

采集东北三省224个不同规模畜禽养殖场饲料和粪便样本,并测定其中铜含量,在此基础上估算了辽宁省主要污灌区农田畜禽粪便铜负荷以及畜禽粪便铜的流失量。研究结果显示,猪、鸡和牛饲料中铜含量分别为179.8、16.6和20.8 mg kg-1。粪便样品中铜含量介于1.5-1521.2 mg kg-1。猪粪中铜含量平均为642.1mg kg-1,高于鸡粪（65.6 mg kg-1）和牛粪（31.1 mg kg-1）。污灌区农田畜禽粪便铜负荷介于12.3-35.4 kg km-2,以小凌河污灌区负荷水平最高。污灌区畜禽粪便铜随土壤输入河流的流失量均低于0.76 kg km-2,其中锦州市西部和鞍山市南部流失量较大。研究认为,东北三省畜禽粪便中铜残留浓度较高,长期农用将导致区域土壤和地表水体铜潜在污染风险增加。

英文摘要：

A total of 224 animal manures and feeds, randomly sampled from different sizes of intensive farms in three northeastern provinces, were analyzed to determine Cu concentration. At the same time, the load of animal manure Cu on farmlands and loss to rivers in sewage irrigation areas of Liaoning Province was estimated. The results showed that the mean Cu concentrations in pig, cattle, and chicken feeds were 179.8, 16.6 and 20.8 mg kg-1, respectively. Cu concentrations in manures ranged from 1.5 to 1521.2 mg kg-1. The mean value of 642.1 mg kg-1 in pig manure was higher than the mean values of 65.6 mg kg-1 and 31.1 mg kg-1 in chicken and cattle manures, respectively. The load of animal manure Cu on farmland in the study area ranged from 12.3-35.4 kg km-2 annually. In particular, the Xiaolinghe area received a higher level than the other areas. The possible amount of manure Cu entering river water as a result of soil erosion was lower than 0.76 kg km-2. The highest loss rates were found in the south of Anshan and the west of Jinzhou. It is suggested that animal manures contain a high level of Cu. Long-term agricultural application of animal manure may increase the potential risk of Cu pollution in soil and surface water.