Effects of waste from livestock farm returning to field under potted condition on nitrogen and phosphorus dynamics of soil-ryegrass systemegate

• Published in: Nanjing nongye daxue xuebao Vol. 32; no. 4
• Main Authors: Zhu Liqun, Nanjing Agricultural University, Nanjing(China), College of Agriculture, Wang Bo, Nanjing Agricultural University, Nanjing(China), College of Resources and Environmental Sciences, Huang Hui, Zhi Chun-li Middle School in Beijing, Beijing(China)
• Format: Journal Article
• Language: Chinese
• Published: 01.12.2009
• Subjects: AZOTE; http://www.fao.org/aos/agrovoc#c_4423; http://www.fao.org/aos/agrovoc#c_5192; http://www.fao.org/aos/agrovoc#c_7156; LOLIUM; NITROGEN; NITROGENO; SOIL; SOL; SUELO
• ISSN: 1000-2030

对盆栽黑麦草施以不同水平的猪粪和牛粪两种有机肥料，通过测定黑麦草对氮和磷的吸收量、土壤的残留量及粪肥中氮和磷的损失量，研究了黑麦草对养殖场粪肥的消纳吸收能力及可能产生的二次污染风险。结果表明：在一定施肥水平范围内，随着粪肥施用量的增加，黑麦草对氮、磷的吸收也随之增加。超过一定范围后其增加潜力不大，且高量施用粪肥将导致土壤中氮、磷残留量明显增加，同时会造成氮、磷流失，对环境的二次污染风险也将随之增大。综合生态效益与经济效益，黑麦草施以猪粪的量应控制在1．5～6．0kg・m. 2，牛粪的量应控制在1．875～15．0kg・m. 2。[著者文摘] By means of applying different levels of pig manure and cattle manure to potted ryegrass, the paper studied the capacity of absorbing organic manure of ryegrass and secondary pollution risk by determining the amount of the nitrogen and phosphorus absorbed by ryegrass, and residue in soils and losses. The results showed that the absorption of nitrogen and phosphorus by ryegrass increased when the manure amount increased in a certain range. When the amount passed the range, its increasing potential is limited. The nitrogen and phosphorus in the soil increased distinctly with high level manure applied, and much more nitrogen and phosphorus lost at the same time, which would cause more secondary pollution risk. As ecological and economic benefi