摘要
通过传统青虾+沉水植物、青虾+河蟹+沉水植物、青虾+河蟹+沉水植物+生态浮床3种养殖模式,研究了生态浮床组合系统在虾蟹养殖中对水体的净化作用以及对虾蟹产量的影响。结果表明,青虾+河蟹+沉水植物+生态浮床的池塘水体净化效果较其他两个池塘更为明显,在虾、蟹混养与生态浮床组合养殖模式下,浮床植物鸢尾对水体氮磷等营养盐吸收效果较好,养殖过程中水质良好,氨氮、亚硝酸盐、CODMn基本保持稳定并达到地表水Ⅲ类标准,叶绿素a为5μg/L,水质控制效果明显;并且虾产量达850 kg/hm2,蟹产量达930 kg/hm2,综合效益高于传统单养青虾或传统虾蟹混养。
In order to study the effection of ecological floating bed combined system on the role of water purification in the aquaculture and the production of shrimp and crab, three culture modes including traditional freshwater shrimp ＋submerged plants, freshwater shrimp ＋crab ＋submerged plants, freshwater shrimp ＋crab ＋submerged plants ＋ecological floating bed were carried ou in this study. The results showed that the pond with freshwater shrimp＋crab＋submerged plants＋ecological floating bed had an better effect on the purification than the other two ponds. With the breeding mode that shrimp crab polyculture and ecological floating bed combination, Iris on the floating bed had a good absorption efl^et on the water of nitrogen and phosphorus. During the breeding process, the ammonia nitrogen, nitrite, COD in water remained stable and reached to the surface water In standard, the Chla reached to 5 μg/L, the water quality control was obvious. The production of shrimp was 850 kg/hm2, and the crab was 930 kg/hm2. The comprehensive benefits of this mode was better than traditional monocuhure fi＇eshwater shrimp or shrimp and crab polycuhure.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第24期138-142,共5页
Guangdong Agricultural Sciences
基金
国家水体污染控制与治理科技重大专项(2008ZX-07101)
上海市科学技术委员会重大项目(08dz1900408)
上海市重点学科建设项目(Y1110
S30701)
关键词
虾蟹混养
沉水植物
生态浮床
种养模式
shrimp crab polyculture
submerged plant
ecological floating bed
breeding mode
