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Position: Home > Articles > Studies on the nutrient (N,P) limitation of pond waters(Cl_Ⅱ~(Na) and Cl_Ⅲ~(Na) in saline-alkaline land Journal of Fishery Sciences of China 1999,6 (4) 43-48

氯化物水型盐碱池塘的限制性营养盐研究

作  者:
文良印;董双林;张兆琪;申屠青春;李德尚;韩文良;任曰达
单  位:
青岛海洋大学国家教委水产养殖开放研究实?;青岛海洋大学国家教委水产养殖开放研究实验室
关键词:
盐碱池塘;氯化物水型;营养盐;施肥
摘  要:
研究了沿黄盐碱地池塘水(ClⅡNa 和ClⅢNa) 的主要营养盐(N、P) 的限制作用和适宜施肥浓度。首次发现该类型池塘普遍表现为氮限制。塘水中无机氮浓度很低,只有(23 .56 ±12 .53) μg/L( M±SD) ,与无机磷的比值仅为1 .02 ±0 .85 ;而总氮和总磷并不低,分别为(3 .35 ±1 .08) mg/L 和(0 .24 ±0 .11) mg/L;TN/TP为14 .94 ±3 .43 。适宜的施肥N∶P( 重量) 为(10 ~15)∶1 。文中提出了1 种氮限制指数:INL= (DOIN1 .0- DOIc)/(DOIN1 .0P0 .1 - DOIc) ,并拟合出INL 与TN/TP的相关模型,INL 可准确地表示氮限制程度。文章最后分析了氮限制的原因。
译  名:
Studies on the nutrient (N,P) limitation of pond waters(Cl_Ⅱ~(Na) and Cl_Ⅲ~(Na) in saline-alkaline land
作  者:
Wen Liangyin Dong Shuanglin Zhang Zhaoqi Shentu Qingchun Li Deshang (Ocean University of Qingdao,Qingadao 266003) Han Wenliang Ren Yueda (Gaoqing Aquaculture Research Institute, Gaoqing 256300)
关键词:
saline-alkaline pond, Cl Ⅱ Na and Cl Ⅲ Na water, nutritive salts, fertilizing
摘  要:
With the oxygen evolution bioassay method, the studies on nutrient (N,P)limitation and optimum N∶P ratio for fertilization of 13 ponds (Cl Ⅱ Na and Cl Ⅲ Na in saline-alkaline land were conducted,and the concentrations of nutrients were measured at the same time.The phenomenon was discovered for the first time that this kind of ponds generally showed N limitation. The concentration of inorganic nitrogen (TN) in pond water was very low,only(23.56±12.53)μg/L(mean±SD),and the TN/TP was only 1.02±0.85.But the total nitrogen and total phosphorus were not low,which were (3.35±1.08)mg/L and (242.16 ±108.70)μg/L,respectively.The TN/TP was 14.94±3.43.The optimum N∶P( by weight) for fertilization was (10~15):1.A kind of index of N limitation,INL=(DOI N1.0 -DOI c)/(DOI N1.0P0.1 -DOI c),which could well express the extent of N limitation,was suggested,and a model was developed to simulate the relationship between INL and TN/TP.At last,the reasons for N limitation were analyzed.

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