水草密度对中华小长臂虾养殖池塘水质和生长的影响  

Effects of Waterweed Density on Water Quality and Growth of Palaemonetes Sinensis in Ponds

作　　者：刘艳辉[1] 杨炳坤 高春山 刘铁钢[1] 李秀颖[1] 祖岫杰[1] LIU Yanhui;YANG Bingkun;GAO Chunshan;LIU Tiegang;LI Xiuying;ZU Xiujie(Jilin Fisheries Research Institute,Changchun 130033)

机构地区：[1]吉林省水产科学研究院,长春130033

出　　处：《中国农学通报》2022年第2期100-105,共6页Chinese Agricultural Science Bulletin

基　　金：吉林省科技重点研发项目“北方池塘中华小长臂虾绿色生态养殖关键技术研究及应用”(2020402046NY)。

摘　　要：为探索养殖池塘水草覆盖面积对养殖水质和对中华小长臂虾生长性能的影响,设伊乐藻密度为10%、30%、50%(A、B、C)3组试验,每666.7 m2放养平均尾重0.01 g的虾苗50万尾。每5天测定一次水化指标,试验结束后测量虾的生长指标及饲料系数。结果表明,水温在20天后A>B>C;溶氧在15天后B>A,C组在25~45天高于A、B,在50~85天低于A、B;pH在35~85天,C>B>A,且C与A、B差异极显著(P<0.01);氨氮在15~25天,A>B>C,在40~85天,C>A>B,且三组间差异极显著(P<0.01);硝酸盐氮在25~45天,A>B>C,在50~85天,C>A>B,且3组间差异极显著(P<0.01)。生长指标与单位产量均为B>A>C,饲料系数C>A>B,B、C差异显著(P<0.05)。综合水质指标、生长性能及饲料利用情况,本试验条件下,B组优于其它二组。In order to explore the influence of waterweed coverage area on aquaculture water quality and growth performance of Palaemonetes sinensis in ponds,in the experiment,three groups of 10%,30%and 50%(A,B and C)waterweed densities were set up,and 500 thousand shrimp larvae with average weight of 0.01 g were cultured per 666.7 m2 in pond.The hydration index was measured once every 5 days,and the growth index and feed coefficient of shrimp were measured after the experiment.The results showed that:the water temperature was A>B>C after 20 days.The dissolved oxygen of B was higher than that of A after 15 days.The dissolved oxygen of C was higher than that of A and B in 25-45 days,and lower than A and B in 50-85 days,in the two periods,the dissolved oxygen of C was significantly different from A and B(P<0.01).From 35 to 85 days,the pH was C>B>A,and the difference was extremely significant among the three groups(P<0.01).In 15~25 days,ammonia nitrogen was A>B>C,while C>A>B was found in 40~85 days,and the difference was extremely significant(P<0.01)among the three groups.The nitrate nitrogen was A>B>C in25~45 days,and C>A>B in 50~85 days,and the difference among the three groups was extremely significant(P<0.01).The growth index and unit yield were B>A>C.The feed coefficient was C>A>B,and there was a significant difference(P<0.05)between B and C.Based on the water quality indexes,the growth performance and the feed utilization,waterweed density of 30%area(B)is better than the other two groups under the experimental conditions.

关 键 词：伊乐藻 中华小长臂虾 池塘 水质 生长性能 

分 类 号：S931.1[农业科学—渔业资源]