夏季崇明扣蟹生态养殖中空心莲子草的日变化研究  

The summer diurnal variation of Alternanthera philoxeroides in juvenile crab-culturing paddy fields on Chongming Island

作　　者：任周[1] 陶贤继[1] 魏华[1,2] 

机构地区：[1]上海海洋大学水产与生命科学学院,上海201306 [2]上海农林职业技术学院动物科学技术系,上海201600

出　　处：《上海农业学报》2014年第1期31-35,共5页Acta Agriculturae Shanghai

基　　金：上海市现农业产业技术体系建设--中华绒螯蟹;国家星火计划重大项目:高品质河蟹池塘生态及加工废弃物利用技术集成与示范(2011GA680001);上海市教委优秀青年教师基金(ssc11034);上海海洋大学博士启动基金(A-2400-11-0188);上海海洋大学产学研践习计划(B-5405-11-0001);上海高校知识服务平台(ZF1206)项目资助

摘　　要：对夏季崇明水草-水稻-扣蟹养殖水体环境的温度、溶解氧、pH和主要栽培水草空心莲子草的叶绿素、蛋白质、淀粉含量的日变化进行了测定。结果表明:空心莲子草的叶绿素a、b及类胡萝卜素含量的日变化一致,含量最低值在5:00,最高值在9:00,且三者含量的日变化具节律性的动态循环;蛋白质在19:00至翌日1:00降温阶段有新的合成;淀粉含量变化规律为:在白天经过合成积累,随后一直下降至翌日5:00,这是由于水草此时间段内呼吸作用的能量耗损;水体温度在5:00最低,此后随日出温度持续升高,至17:00水体温度达到最大值,随后温度一直降低至翌日5:00;水体中的溶解氧与温度变化趋势基本相似,但溶氧最低值出现在7:00;水体pH的昼变化趋势与温度变化趋势一致。The aquatic plant-rice-juvenile crab culturing ecosystem on Chongming Island in summer was investigated in terms of the aquaculture environment＇s temperature, dissolved oxygen and pH and the mainly-planted Alternanthera philoxeroides＇ chlorophyll,protein and starch. The results indicated that the diurnal variations of chlorophyll a/b and carotenoid contents of A. philoxeroides were the same and a rhythmic dynamic loop, and the minimum and maximum occurred respectively at 5.00 and 9：00 ;The synthesis of new proteins occurred in the temperature-fall period from 19：00 to the next day 1.00;The soluble starch content reached its maximum at 17.00 through synthesis and accumulation during daytime,and then declined because of respiration until the next 5： 00;The water temperature was minimum at 5：00, then increased and reached its maximum at 17： 00, and after that it gradually decreased until the next 5：00;The variation of the dissolved oxygen of water was basically similar to the water temperature variation though the minimum dissolved oxygen value appeared at 7：00;The water pH value during daytime varied the same as the water temperature did.

关 键 词：稻田 空心莲子草 蟹苗 温度 溶解氧 pH 日变化 

分 类 号：S968.225[农业科学—水产养殖]