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为了解长期施用猪场废水对农田土壤Mn的影响,采集和测定了河北省京安猪场区域农田清洁区和污灌8年猪场废水污灌区的耕层(0～20cm)共52个土壤样品的pH、养分和Mn的全量和有效态含量,对Mn的全量和有效态含量进行空间变异和分布特征分析。空间变异分析表明,Mn的全量和有效态含量变异函数理论模型均符合球状模型,全Mn和有效Mn高度空间自相关,除受成土母质等因素影响外,还受灌溉猪场废水、施肥等人为因素的影响,污灌猪场废水对研究区土壤Mn的富集效应很小,但灌溉猪场废水会降低土壤pH而增加Mn有效态含量。
In order to understand the effect of long-term application of piggery wastewater on farmland soil Mn, 52 soil layers (0 ~ 20cm) were collected and measured on the farmland clean area in Hebei Province and farm wastewater in 8-year wastewater treatment farm The total and effective contents of pH, nutrients and Mn of the samples were analyzed for spatial variability and distribution of total and effective Mn contents. Spatial variability analysis showed that the theoretical model of variation function of total and effective Mn content all fit the spherical model, and the full Mn and available Mn highly spatial autocorrelation. Apart from the effects of soil parent material and other factors, Anthropogenic factors affect the enrichment effect of wastewater from swine farms on soil Mn enrichment in the study area, but irrigating swine wastewater will reduce soil pH and increase Mn content.