【摘要】 采用碘量法对江苏海域四个文蛤增养殖区底泥中硫化物含量进行了检测分析。5￣8月,硫化物含量吕四海域持续在100mg/kg以上,东凌、新港在80mg/kg以上,东沙相对较低在50￣70mg/kg。东凌、新港海域分别在6月上旬和9￣10月发生文蛤幼苗和种苗的集中死亡,吕四和东沙区域8￣9月发生文蛤大批集中死亡。结果显示,文蛤幼苗对硫化物的忍受限度小于大规格种苗和成品文蛤;硫化物对文蛤具有较强的毒害作用,并可能与文蛤大批死亡存在一定的关系。更多还原

【Abstract】 Using the iodin quantum method,sulphuret contents were detected in substratum which had been taken from 4 stations of hard clam breeding area in Jingsu sea area.From May to August,the sulphuret content in LvSi was always higher than 100 mg/kg,DongLing and XinGang’s were always higher than 80 mg/kg,DongSha’s was lower than that of LvSi,DongLing and XinGang spectively,the sulphuret content is about 50￣70 mg/kg.The first ten days of June and from September up to Octomber in DongLing and XinGang spectively,there had a large quantities of concentrative death of infanticism and seed hard clam.In LvSi and DongSha , there had numbers of seed hard clam concentrative death from the time of August up to September.The results showed that the infantitcism hard clams had a tolerance limit to sulphuret is less than that of large standard hard clams and the sulphuret was much harmful to hard clam,it had some extent correlation with the large quantities of hard clams death.更多还原