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首页> 外文期刊>International Journal of Environmental Research and Public Health >Nutrient Status and Contamination Risks from Digested Pig Slurry Applied on a Vegetable Crops Field
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Nutrient Status and Contamination Risks from Digested Pig Slurry Applied on a Vegetable Crops Field

机译：蔬菜作物田中使用消化猪粪制成的养分状况和污染风险

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The effects of applied digested pig slurry on a vegetable crops field were studied. The study included a 3-year investigation on nutrient characteristics, heavy metals contamination and hygienic risks of a vegetable crops field in Wuhan, China. The results showed that, after anaerobic digestion, abundant N, P and K remained in the digested pig slurry while fecal coliforms, ascaris eggs, schistosoma eggs and hookworm eggs were highly reduced. High Cr, Zn and Cu contents in the digested pig slurry were found in spring. Digested pig slurry application to the vegetable crops field led to improved soil fertility. Plant-available P in the fertilized soils increased due to considerable increase in total P content and decrease in low-availability P fraction. The As content in the fertilized soils increased slightly but significantly ( p = 0.003) compared with control. The Hg, Zn, Cr, Cd, Pb, and Cu contents in the fertilized soils did not exceed the maximum permissible contents for vegetable crops soils in China. However, high Zn accumulation should be of concern due to repeated applications of digested pig slurry. No fecal coliforms, ascaris eggs, schistosoma eggs or hookworm eggs were detected in the fertilized soils.
机译：研究了施用消化猪粪对蔬菜田的影响。这项研究包括对武汉市一个蔬菜作物田的养分特征，重金属污染和卫生风险进行的为期三年的调查。结果表明，厌氧消化后，消化后的猪粪中残留有大量的N，P和K，而粪便中的大肠菌，a虫卵，血吸虫卵和钩虫卵却大量减少。春季在消化的猪粪中发现高的Cr，Zn和Cu含量。将消化的猪粪浆应用于蔬菜作物田可改善土壤肥力。施肥土壤中植物有效磷的增加是由于总磷含量的显着增加和低速磷含量的降低所致。与对照相比，施肥土壤中的砷含量略有增加（p = 0.003）。施肥土壤中的Hg，Zn，Cr，Cd，Pb和Cu含量未超过中国蔬菜作物土壤的最大允许含量。但是，由于重复使用消化后的猪粪，锌的高积累应引起关注。在肥沃的土壤中未检测到粪便大肠菌，a虫卵，血吸虫卵或钩虫卵。

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