复方中草药与微生物杀菌剂联用对中华绒螯蟹大田养殖的应用效果

Chinese Herbal Complex in Combination with Microbial Bacteriocide:Effect on Farm-scaled Culture of Eriocheir Sinensis

为评价复方中草药与微生物杀菌剂联用对中华绒螯蟹养殖的大田应用效果。本试验以养殖水质、累积死亡数量、养殖效益作为评价指标,观察了复方中草药内服(10 g/kg饲料,2次/天)配合微生物杀菌剂全池泼洒(3.75 kg/hm2,1次/10天)在养殖周期为130天时对中华绒螯蟹养殖的应用效果。与中华绒螯蟹的常规养殖方式相比,复方中草药与微生物杀菌剂联用能够显著降低养殖水体中的氨氮和亚硝酸盐含量,提高养殖水体中的溶解氧含量,改善养殖水质,而且能够使中华绒螯蟹的130天平均累积死亡数量降低91.3%,每公顷产量和每公顷产值分别增加40.9%和61.9%,明显提高中华绒螯蟹的养殖效益。本试验证实了复方中草药与微生物杀菌剂联用对中华绒螯蟹养殖具有显著的大田应用效果,为建立中华绒螯蟹的高效绿色健康养殖技术提供了科学参考。

The study aims to assess the effect of Chinese herbal complex in combination with microbial bacteriocide on the farm-scaled culture of Eriocheir sinensis. Using water quality, cumulative death count and farming performance as evaluation indexes, the application effect of Chinese herbal complex(10 g/kg feed,twice per day) and microbial bacteriocide(3.75 kg/hm2, once every 10 days) in combination on the aquaculture of E. sinensis was observed for 130 days. In comparison with the traditional culture of E. sinensis, the combination of Chinese herbal complex and microbial bacteriocide could significantly improve the aquaculture water quality with the reduction of ammonia, nitrite and increase dissolved oxygen in aquaculture water, greatly decrease the cumulative death counts of crabs for 130 days by 91.3%, and remarkably enhance the yield and output value per hectare by 40.9% and 61.9%, respectively. This study confirms the significant effect of the combination of Chinese herbal complex and microbial bacteriocide on the farm-scaled culture of E. sinensis,and can provide a scientific basis for the development of high-efficient culture techniques of E. sinensis.