淋溶对畜禽粪便释放氮磷面源污染物的影响

在淋溶条件下,分别对施入的猪粪(ZF)、牛粪(NF)、鸡粪(JF)中TN,TP的流失进行定量化;估算畜禽粪便的施用量与淋溶量对TN,TP的释放量、释放速率、释放率的影响.结果表明,对于TN,TP的释放量而言,施用量以及淋溶量越大,则累积释放量也就越大;3种畜禽粪便对TN,TP的释放速率的影响为TN>TP.对于TN,由大到小依次为:猪粪,牛粪,鸡粪;而对于TP,由大到小依次为:猪粪,鸡粪,牛粪;对释放率的影响由大到小依次为:猪粪,牛粪,鸡粪;且粪便施用量相同时淋溶量高的释放率高,淋溶量相同时施入量低的释放率高.

Effects of Soil Leachate on Release of Nitrogenous and Phosphorous Non-point Source Pollutants from Animal Manure

Quantitative analysis was made of the leaching losses of total N(TN) and total P(TP) in pig manure(ZF),cow manure(NF) and chick manure(JF),and the influences of application rate and leaching amount of animal manure on the release quantity,release speed and release rate of TN and TP were estimated.The results showed that the cumulative release of TN and TP increased with the application rate of animal manure and the leaching amount.The release speed of TN from the 3 kinds of animal manure was greater than that of TP.The TN released from pig manure was the greatest,followed in order by cow manure and chick manure,and the TP released from pig manure was the greatest,followed in sequence by chick manure and cow manure The influences on the release rate of TN and TP was in the order of pig manure>cow manure>chick manure.With similar manure application amount,the release rate increased with leaching amount,and with similar leaching amount,the release rate was greater in the low application rate treatment.