不同黄鳝放养密度的稻田水质及生产效果  

Effects of finless eel releasing density in rice field on water quality and production

作　　者：郭印[1] 魏华[1] 邵乃麟 沈竑 陈金民 

机构地区：[1]上海农林职业技术学院,上海201600 [2]上海海洋大学水产与生命学院,上海201306 [3]上海春润水产养殖专业合作社,上海202179

出　　处：《上海农业学报》2017年第5期58-63,共6页Acta Agriculturae Shanghai

基　　金：上海市科技兴农重点攻关项目[沪农科攻字(2010)第1-6号;上海市教育委员会重点学科建设项目(J50701);上海市教育委员会晨光计划项目(14CGB19);上海市科委部分地方院校能力建设项目(13320501900)

摘　　要：为研究稻田黄鳝最佳放养密度,通过不同密度黄鳝养殖试验,比较了试验稻田部分水质指标,并对试验稻田进行了经济效益分析。结果表明:放养密度对稻田水体溶解氧、氨氮和亚硝酸氮有显著影响,每667 m^2放800尾水质相对较好,溶解氧均值3.76 mg/L,氨氮均值0.553 mg/L,亚硝酸氮0.022 mg/L。经济效益分析表明:每667 m^2放1 200尾稻田经济效益最好,利润每667 m^2达5 967.0元。综合来看,每667 m^2放1 000尾既保证水质良好也取得较高利润:溶解氧均值2.86 mg/L,氨氮均值0.817 mg/L,亚硝酸氮0.024 mg/L,利润每667 m^2达5 260.7元,是较合适的选择。In order to investigate the optimal finless eel releasing density in rice field, the rice field water qualities were compared and the economic benefits were analyzed via field experiments of paddy rice at different finless eel releasing densities. The results indicated that the releasing density significantly influenced the rice field water quality,and when the releasing density was 800 finless eels/667 m^2 the water quality was relatively good：dissolved oxygen,ammonia nitrogen and nitrite nitrogen being averagely at 3. 76 mg/L,0. 553 mg/L and0. 022 mg/L respectively. The economic benefit analysis showed that at 1 200 finless eels/667 m^2 the economic benefit was the best and the profit reached 5 967. 0 yuan/667 m^2. Comprehensively considering, a releasing density of 1 000 finless eels/667 m^2 was suitable and could gain both quite good water quality and relatively high profit： dissolved oxygen, ammonia nitrogen and nitrite nitrogen being averagely at 2. 86 mg/L,0. 817 mg/L and0. 024 mg/L respectively, and the profit being 5 260.7 yuan/667 m^2.

关 键 词：水稻 稻田养鱼 黄鳝 放养密度 水质 经济效益 

分 类 号：S964.2[农业科学—水产养殖]