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１９９６年４月～１９９８年７月，我们采用次溴酸钠氧化法对胶州湾中的两个半封闭式的虾池中氮元素的含量时行了实验测试，分别通过将各态氮氧化或还原为 ＮＯ_(２－)态氮的方法测定不同时期虾池中ＮＨ_(４)~(＋)＋ＮＨ_３态Ｎ，ＮＯ_(３)~(－)态Ｎ，ＮＯ_(２)~(－)态Ｎ，总Ｎ的含量，并对水中其它一些影响虾池水质状况及其变化的物理化学因子，包括ｐＨ值，溶解氧（ＤＯ）、温度、盐度等进行了测定。得到在不同理化指标下各价态氮营养盐的含量和变化趋势，初步讨论和分析该水环境中氮营养盐存在的特征与行为，其他理化因子对氮营养盐在水体中的存在形式、含量，变化特征等的影响。这些对于适时施肥和合理投饵，有效地调节放养量具有一定的指导意义。
April 1996 to July 1998, we used sodium hypochlorite oxidation Jiaozhou Bay in the two semi-enclosed shrimp ponds when the nitrogen content of the experimental tests were carried out by the various states of nitrogen or (2) N (NO_ (2)) state N, NO_ (2) ~ (-N), N_ , Total nitrogen (N), and other physicochemical factors, including pH, dissolved oxygen (DO), temperature, salinity and so on. Under different physical and chemical indicators, the content and trend of nitrogen nutrients in each valence state were discussed. The characteristics and behavior of nitrogenous nutrients in the water environment were discussed and analyzed. The forms and contents of nitrogen and phosphorus , Changes in the characteristics of the impact. These are of guiding significance for timely fertilization and reasonable feeding and effective regulation of stocking quantity.