添加硝酸钙对池塘沉积物中理化因子的影响研究  

Effect of Calcium Nitrate on Physicochemical Factors of Sediment in Pond

作　　者：路斌[1,2] 魏南[2] 余德光[2] 谢骏[2] 王广军[2] 陈成勋[1] 战海[1,2] 蔡云川[3] 

机构地区：[1]天津农学院,天津300384 [2]中国水产科学研究院珠江水产研究所,广州510380 [3]广东省水产技术推广总站,广州510222

出　　处：《中国农学通报》2015年第26期51-55,共5页Chinese Agricultural Science Bulletin

基　　金：国家支撑计划专题项目"珠江流域池塘生态养殖模式研究与小区化集成示范"(2012BAD25B04);广东省海洋渔业科技推广专项"内陆地区高效安全养殖技术集成与示范推广"(B201300A01)

摘　　要：为减少池塘底泥对养殖水环境的影响,以硝酸钙和养殖池塘底泥沉积物为研究对象,采用模拟试验方法,探讨了添加硝酸钙对池塘沉积物理化因子的影响。结果表明：添加硝酸钙后,表层沉积物间隙水中NH4^＋-N浓度持续降低,最终降至初始值的14.78%;同时可以显著降低表层和深层沉积物间隙水中的PO4^3--P的浓度,在表层降低的幅度较大,第7-28天可降低超过85%的PO43--P。试验结果表明,添加硝酸钙可以显著改善池塘底泥沉积物中NH4^＋-N和PO4^3--P的含量,研究结果对减少池塘底泥沉积物的修复具有积极的生态学意义。In order to reduce the influence of pond sediment on aquaculture water, the author studied the effects of adding Ca（NO3）2 on the physical and chemical factors of sediment by the method of simulate experiment. The results showed that NH4^＋-N concentration in interstitial water of surface sediment reduced after adding Ca（NO3）2, eventually reduced to 14.78%. At the same time, the PO4^3--P concentration ininterstitial water of surface and deep sediment reduced significantly. And the reduction was bigger in surfacesediment, the PO4^3--P concentration reduced by 85% from the 7th to the 28 thday. The results showed that theNH4＋-N and PO4^3--P in pond sediment could be reduced after adding Ca（NO3）2, and it had ecological significance for the repair of sediment in pond.

关 键 词：硝酸钙 池塘 底泥沉积物 理化性质 

分 类 号：S949[农业科学—水产养殖]