虹鳟鱼的养殖气象条件初析

来源 :农业气象 | 被引量 : 0次 | 上传用户:limutou
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
虹鳟(galm gairclneri irideus)原产美国,是世界性养殖的优质高产品种。它肉多刺少,肉质鲜嫩,美味可口,属上等佳肴珍品。国际市场列为高档商品鱼,经济价值高。虹鳟属冷水性鱼类,养殖的适温为7~20℃。1980年我们从山西太原引进虹鳟发眼卵孵化,采用网箱养殖,连续五年获得成功,并荣获省、市、县优秀科技成果奖。(一)养殖点的环境条件选择网箱养殖点选择在新安江坝下3公里处江面(属水库深层水,水温终年偏低),全年水温变动 Rainbow trout (galm gairclneri irideus) originated in the United States, is a worldwide breeding of high-quality varieties. It is less spicy meat, fresh meat, delicious, is the finest delicacies. The international market as a high-grade fish products, high economic value. Rainbow trout is a cold water fish breeding temperature is 7 ~ 20 ℃. In 1980, we introduced the rainbow trout from Hubei Taiyuan to make eye-hatching and use cage culture to achieve success for five consecutive years and won the outstanding scientific and technological achievement award of provincial, municipal and county. (A) the environmental conditions of breeding point Select cage culture point to choose 3 km below the Xin’anjiang dam Jiang surface (a deep reservoir of water, the water temperature is low throughout the year), the annual temperature changes
其他文献
Research contacting chaos with fractals is carried out.First,we employ the theoretical quarter Sinai billiard model to study its chaos by using the stationary e
期刊
Based on the principles of the Hall effect for ultrasound excitation and wave propagation in a static magnetic field,the theory of ultrasound induced Hall volta
期刊
Product rotational polarization in the title reactions is investigated by employing the quasi-classical trajectory method.An accurate ground 12 A potential ener
期刊
A combination of large mass,weak spring and nano-grating is the key for a nano-grating accelerometer to measure nano-G acceleration.A novel compact nano-grating
期刊
The electron spin dynamics is investigated by the time-resolved Kerr rotation technique in a pair of special GaAs/AlGaAs asymmetric quantum well samples grown o
期刊
We present an analytical investigation for a baseline-free imaging of a defect in plate-like structures using the time-reversal of Lamb waves.We first consider
期刊
Bandgaps of chalcogenide glass hollow-core photonic crystal fibers (GLS HC-PCFs) are analyzed by using the plane-wave expansion method.A mid-infrared laser can
期刊
An improved analytical model of the drift field suppressed by the Dember field due to ambipolar diffusion in the p-type quasineutral region (p-QNR) of a forward
期刊
期刊
签于目前冷凉灌区春小麦播量大,密度高,倒伏严重的情况,是影响本区小麦高产的重要因素之一,为指导大面积生产提供小麦合理密植的依据,弄清苗密度对产最的影响和影响苗密度因