摘要
为研究水稻对养殖池塘水质净化效果及对鱼类产量的影响,设计2个处理,分别为水稻浮床组(试验组)和常规养殖组(对照组).试验期间,定期检测2个试验池塘水质理化指标,试验结束后统计养殖鱼类产量、成活率及水稻产量.结果表明:试验组平均水温略低于对照组,透明度(SD)高于对照组;试验初期,试验组溶解氧(DO)含量高于对照组,中后期DO含量低于对照组.水稻浮床对养殖池塘水体总磷(TP)、总氮(TN)、氨氮(NH4+-N)、亚硝酸盐氮(NO2--N)、化学耗氧量(CODMn)的平均去除率分别为 30.6%、29.6%、27.9%、21.0%和15.6%.试验组不同养殖鱼类成活率均高于对照组,养殖鱼类产量22557.15 kg/hm2,浮床水稻产量5234.57 kg/hm2.
Abstract
To study the effect of rice on water purification and fish yield in aquaculture ponds,two treatments were designed,namely the rice floating bed group(experimental group)and the conventional aquaculture group(control group).During the experiment,the physical and chemical indicators of water quality in two experimental ponds were regularly tested.After the experiment,the yield of farmed fish,survival rate,and rice yield were counted.The results showed that the average water temperature of the experimental group was slightly lower than that of the control group,and the transparency(SD)was higher than that of the control group;in the early stage of the experiment,the dissolved oxygen(DO)content in the experimental group was higher than that in the control group,and in the middle and later stages,the DO content was lower than that in the control group.During the experiment,the average removal rates of total phosphorus(TP),total nitrogen(TN),ammonia nitrogen(NH4+-N),nitrite nitrogen(NO2--N),and chemical oxygen demand(CODMn)in the aquaculture pond water by rice float-ing bed were 30.6%,29.6%,27.9%,21.0%,and 15.6%,respectively.The survival rate of different cultured fish in the experimental group was higher than that in the control group,with a fish yield of 22557.15 kg/hm2 and a floating bed rice yield of 5234.57 kg/hm2.
基金项目
现代农业产业技术体系建设专项(CARS-45)
现代农业产业技术体系建设专项(CARS-46)
合肥市关键共性技术研发"揭榜挂帅"项目(GJ2022QN09)
安徽省农科院成果转化项目(2023YL023)
肥西县科技特派员专项(202302)
肥西县稻渔产业发展科技特派团项目(202203)
国家科技期刊平台
NSTL
万方数据