中文摘要：

用15个上口面积为40m^2，底部面积为20m^2，深为1m的池塘，在相同的放养水平和投饲水平下，进行氮磷试验研究。本试验共设置五个处理：N／P=1，N／P=5，N／P=10，N／P=20，CK，每个处理设置3个重复。试验结果表明：试验中投放的饵料、肥料分别占氮总输入的30％～46．12％和37．81％～39．52％；占磷总输入的15．44％～74．74％和16．31％～79．12％。在支出项目中，鱼类的收获支出的氮磷占氮磷总输入的52．31％～75．95％和8．98％～40．39％；沉积在底泥中的氮磷分别占氮磷总输入的19．95％～36．3％和35．82％～86．52％；底泥中氮磷的渗漏占其总输入的1．49％～12．66％和1．09％～11．28％，其中氮的损失率对照最低为1．49％，N／P=20的损失最高为12．66％；磷的损失率N／P=10的处理最低为1．09％，对照为最高11．28％。

英文摘要：

At the same fish density and fodder, nitrogen and Phosphorus budgets of 15 muti -fish culture ponds were studied with Hypophthalmichthys molitrix, Aristichthys nobilis, Carassius auratus gibelio, and five treatments, N/P = 1, N/P = 5, N/P = 10, N/P = 20, CK, respectively. The main results were as follows： The nitrogen content of all input in the fodder and fertilizer was 30 -46. 12% and 37.81 -39. 52% ; but Phosphorus contents in in the fodder were between 15. 44% and 74. 74%, and between 16. 31% and 79. 12% in the fertilizer. The fish yields comprise 52. 31 -75. 95% of total N inputs and 8.98 -40. 39% of total P inputs, while the nitrogen and phosphorus accumulation in the muds comprise 19. 95 - 36. 3% and 35.82 - 86. 52% of the total. Hence, the loss of nitrogen and phosphorus in the treatments through seepage comprise 1.49 - 12.66% and 1.09 - 11.28% of the total inputs. As to the loss of nitrogen, the control was the lowest, but the treatment of N/P = 20 was the highest. As to the loss of phosphorus the treatment of N/P = 10 was the lowest, while the control was the highest.