四大家鱼
- 网络the four major chinese carps;Asian carp
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丹江口水利枢纽工程区域构造稳定性分析丹江口水利枢纽兴建后汉江中下游四大家鱼等早期资源及其演变
The early evolution of the four major Chinese carps resources in the middle and lower reaches of Hanjiang River after the construction and operation of Danjiangkou Reservoir
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长江水系四大家鱼种质资源的保护和合理利用
Protection and rational utilization of the germplasm resources of the four major Chinese carps in the Yangtze River System
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长江中下游鲢鳙草青四大家鱼线粒体DNA多样性分析
Diversity of mitochondrial DNA in the populations of silver carp , bighead carp , grass carp and black carp in the middle and lower reaches of the Yangtze River
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赣江中游四大家鱼产卵场现状初步调查SWOT分析在旅游规划中的应用&以江西赣州为例
Spawning Sites of Four Major Chinese Carps in the Middle Reaches of Ganjiang River SWOT analysis in tourism planning
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总体来看,四大家鱼在洞庭湖出现时间为7-11月。
Four major Chinese carps occur during July-November in Dongting Lake .
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四大家鱼的微卫星以二碱基重复序列为主。
The micro-satellites of four major Chinese carps are main two-base cycled sequence .
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四大家鱼鱼卵受精率计算方法的探讨
Study on the Method of Calculating Egg Fertilizing Rate for Four Domestic Fishes
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汉江中游江段四大家鱼产卵场现状的初步研究
Spawning Sites of Four Major Chinese Carps in the Middle Reaches of Hanjiang River
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汉江中下游四大家鱼自然繁殖的生态水文特征
Eco-hydrological Characteristics of Four Major Chinese Carps on Nature Spawning Conditions in the Mid-lower Hanjiang River
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长江瑞昌江段四大家鱼鱼苗捕捞现状分析
Analysis on catching fry of four major Chinese carps in the Ruichang section of Yangtze River
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四大家鱼以外的鱼种产量所占比重达75%。
The output of species other than " Four people fish " accounted for up to 75 % .
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长江中游四大家鱼发江生态水文因子分析及生态水文目标确定
Study on the eco-hydrological factors and flow regime requirement on spawning of four major Chinese carps in the middle reaches of Yangtze River
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本试验通过对四大家鱼鱼卵受精率计算方法的初步研究,得出如下结论:(1)计算家鱼鱼卵受精率的取样时间为卵裂期,尤以桑椹期为佳。
The experiment showed that the sampling periods for calculating the egg-fertilizing rate are clearage stage , whereas , morula stage is best .
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草鱼,中国四大家鱼之一,在我国大宗淡水鱼类养殖中占据举足轻重的地位。
Grass carp ( Ctenophaiyngodon idellus ), one of four chinese carps , occupies a pivotal position in conventional freshwater fish industries of China .
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四大家鱼幼鱼的微耳石短半径和日龄均呈显著的线性关系,和体长、体重也均呈显著线性关系。
Short radius of lapillus of juveniles was all in a linear correlation with the daily age , as well as body length and weigh .
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经过比较分析后的结果表明抚河福州段四大家鱼的遗传多样性较为丰富。
The result of our study indicated that the four major Chinese carps in the Fuzhou reaches of Fu River had abundant genetic diversity . 5 .
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鳙是我国四大家鱼之一,也是我国传统混养模式中的主要滤食性鱼类。
Bighead carp is one of four domestic Chinese carps , and is also one of the main filter-feeding fishes in our traditional poly culture mode .
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四大家鱼已经引入到世界20多个国家和地区,用于食用或者控制水质。
They have been introduced into more than 20 countries and regions of the world either for human consumption or for either their ability to aid in water quality control .
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养殖品种从以前以四大家鱼为主发展到现在包括多种名特新优品种在内的40多个品种。
Aquaculture species developed from the previous mainly " four people fish " to now a variety of new and fine varieties of Montrose , including more than 40 varieties .
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回归分析表明,四大家鱼幼鱼的体长、体重均与日龄呈显著的线性关系,体长体重生长呈显著的幂指数关系。
Regression analysis shows that , daily age of juveniles were in a linear correlation with body length and weigh , body length were in a power correlation with body weigh . 4 .
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2004年四大家鱼的产卵量仅相当于1976年监测结果的6.71%,汉江中游四大家鱼资源已严重衰退。
Four Chinese carps spawn quantity in middle of Hanjiang River in 2004 only amounted to 6.71 % of that ( 13.9 × 10 ~ 8 grains ) in 1976 , which indicates that four Chinese carps resources declined severely in past years .
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在洪水脉冲生态调度上,主要有汛前涨水期不能采用均匀放水原则,而要适时地进行洪水脉冲式放水,促进四大家鱼的天然繁殖和物种保存的生态调度措施;
At October impounding time advance the ahead of impounding behind main flood season schedule . At ecology flooding pulse scheduling , reservoir must not let water out in uniformity , but make some flooding pulse to promote propagate of the four home fish and preserving species .