规模化养猪场沼液的农用现状与对策

介绍了规模化养猪场沼液的农用现状,发现这些沼液除了富含N、P、K等植物生长所必须的营养元素外,还含有一定数量的重金属和兽药残留等物质。提出了最经济有效的解决途径,即适度规模养殖,确保沼液场内消纳,开展规模化养猪场沼液农用安全性研究。

Status and Countermeasures of Biogas Slurry of Scale Pig Gery

Status of biogas slurry of scale pig gery was introduced, besides such nutritious elements as N, P and K necessary for plants’ growth, the biogas slurry of large-scale piggeries also has a certain amount of other residual substances such as heavy metal and pesticide. Currently, biogas slurry was largely discharged into rivers straightly; the fundamental reason lies precisely in disconnection between agriculture and animal husbandry. In light of the actual situation, the most effective and economical means whereby to solve the problem was to cultivate land in the periphery of large-scale piggeries to take in those biogas sewage. In order to attain this end, two requisites mush be put in place. The first was a moderate-scale culturing to ensure the consumption of biogas slurry in piggeries. The second regards research into safety of biogas slurry for agricultural use.