不同季节、生长阶段对奶牛粪便主要污染指标的影响

为了解规模化奶牛场产生的粪便对环境污染的危害程度,本文对规模化奶牛场育成牛和成乳牛粪便主要污染指标进行了特性分析。结果表明,季节因素对育成牛及成乳牛粪便特性的影响显著(P<0.05)。生长阶段对粪便含水率的影响差异显著(P<0.05),而对有机质、氮、磷、铜、锌、钾的影响差异不显著(P>0.05)。

Influence of Seasons and Developmental Stages on the Main Pollution Index of Cow Dung

In order to grasp the damage of feces discharged by large-scale dairy farms to the environment and improve its management and treatment, namely, to reach harmless, minimized, recycling and ecological treatment, the paper conduct a characteristic analysis on the major pollution indicators of both young and adult dairy cows on the large-scale dairy farm. The result showed that the major pollutants in the feces of young and adult dairy cows on the large-scale dairy farm were organic matters, N, P, followed by Cu and Zn. Their make-up was greatly influenced by season. Besides, the water content was significantly affected by the growth phase of dairy cows （P〈0.05）, while organic matters, N, P, Cu, Zn and K were not significantly different （P〉0.05）.