一种生物净水剂对河蟹养殖水体水质净化效果研究  

The Purification Functions of a Biological Cleaning Agent on Aquaculture Water of Chinese Mitten Crab

作　　者：宋学宏[1] 耿英慧 杨彩根[1] 李洪伟 

机构地区：[1]苏州大学基础医学与生物科学学院,江苏苏州215123 [2]诺维信生物公司,上海200336 [3]吴江市朱毛根水产养殖合作社,江苏吴江215222

出　　处：《水生态学杂志》2009年第6期89-93,共5页Journal of Hydroecology

基　　金：江苏省社会发展项目(BS2007031);苏州市农业科技项目(SNG0820)资助

摘　　要：2007年3～10月,在苏州市吴江松棱镇朱毛根合作社选择12个标准养殖池进行试验,以不同剂量的生物净水剂(Pondplus)投入到放养量为1.2万只/hm2的河蟹养殖池中,每10d泼洒1次,观察其对养殖池水质的净化效果和对河蟹生长的影响。结果显示,试验组的DO、CODMn、NO2--N等水质指标显著优于对照组;NH4+-N也有下降的趋势,但没有达到显著水平;在35℃以上的高温天气,泼洒450g/(hm2.m)生物净水剂的池塘底部DO昼夜均高于4mg/L,且始终比对照组高2mg/L左右。养殖试验结束时,泼洒150、300和450g/(hm2.m)的试验池河蟹平均体重较对照组分别增加了14.9%、27.8%和27.8%,产量增加了8.5%、11.9%和18.6%,经济效益增加了96.2%、159.8%和180.9%,明显提高了河蟹的养殖效果。The biological cleaning agent Pondplus was dowsed each ten days at different dosage into breeding ponds for Chinese mitten crab with stocking rate at 12 000 ind./ha, to evaluate its purification effects on water environment in breeding ponds and its effects on Chinese mitten crab growth. The results showed that dousing treatment improved the water quality significantly as evaluated according to the parameters of DO, CODMn, NH4 ＋ - N and NO2 - -N. Particularly, when the air temperature was higher than 35℃, the diurnal observation on DO values at the bottom of ponds showed that dousing at 450 g/（ ha·m） gave a DO value higher than 4 mg/L all day long, which was 2 mg/L higher than that of control. The observed increase of Chinese mitten crab were 14. 9% , 27.8% , 27.8% by average weight, when dousing at 150, 300, 450 g/（ha · m） , respectively. Accordingly, the production increased by 8.5%, 11.9%, 18.6% through its promotion of Chinese mitten crab growth, and the economic efficiency were enhanced by 96.2% , 159.8% , 180.9%.

关 键 词：生物净水剂 养殖水体 水质 河蟹 芽孢杆菌 

分 类 号：S949[农业科学—水产养殖] X52[农业科学—水产科学]