生态与农村环境学报2012，Vol.28Issue(3)：329-332,4.
主养草鱼(Ctenopharyngodon idellus)池塘3种混养模式下氮含量的比较
Comparison in Nitrogen Content Between Ctenopharyngodon idellus Dominated Fish Ponds Different in Polyculture Model
摘要
Abstract
Nitrogen contents in the waters and sedin onts collected from three fish ponds dominated with grass carp bu slightly different in polyculture model ( Model I , containing 250 grass carps, 35 silver carps, 40 bighead carps, and 15 crucian carps; Model II, 250 grass carps, 25 silver carps, 20 bighead carps, 20 paddlefishes, and 15 crucian carps; Model III, 250 grass carps, 35 silver carps and 15 crucian carps) were analyzed for comparison. Results show that in waters that the mean total nitrogen content of Model I , Model II , Model III was 1.251, 1. 001 and 1. 228 mg ? L-1, respectively; and the mean ammonium nitrogen content, 0. 391, 0. 345 and 0. 319 mg ? L-1, respectively; the content of nitrate showed a decreasing order of Model I > Model II > Model III , and the content of nitrite followed a different order, () Model II > Model I > Model III. And in sediments, the mean total nitrogen content of Model I , Model II and Model III was 0. 793, 0. 910 and 0. 963 mg ? g-1, respectively; and the mean ammonium nitrogen content, 0.005, 0. 006 and 0. 004 mg ? g-1, respectively. TN in water was significantly lower in Model II than in Models I and III (P < 0. 05 ) , and the transformation of nitrogen nutrients in the sediment was quicker too. Obviously, Model II is the most conducive to transformation and utilization of nitrogen nutrients in the waterbody.关键词
草鱼/氮/混养模式/池塘Key words
Ctenopharyngodon idellus/ nitrogen/ polyculture model/ pond分类
资源环境引用本文复制引用
朱玉婷,杨学芬,王琴,陈洁,施培松,熊邦喜..主养草鱼(Ctenopharyngodon idellus)池塘3种混养模式下氮含量的比较[J].生态与农村环境学报,2012,28(3):329-332,4.基金项目
国家重点基础研究发展计划(2009CB118706) （2009CB118706）
"十一五"国家科技支撑计划(2006BAD03B02-04) （2006BAD03B02-04）
