三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

Yellow croaker 'savior' revives depleted stock

By Gu Qianjiang,Zhang Yizhi and Xu Xueyi | CHINA DAILY | Updated: 2020-08-03 09:25
Share
Share - WeChat
Workers collect old floats at yellow croaker farms in June as part of efforts to upgrade facilities.  JIANG KEHONG/XINHUA

A fresh start

He had to start from scratch. First, he learned how to induce spawning, inseminate fish eggs and hatch fries at local freshwater fish farms, while studying books about the artificial propagation of saltwater fish. Meanwhile, he surveyed the spawning grounds in Sandu Bay to study the behavior of the fish.

With 10,000 yuan allocated by the provincial fishery department, the Large Yellow Croaker Artificial Propagation Project was officially launched in 1985.

In a spawning induction experiment on May 9, 1987, more than 100 large yellow croaker fries hatched from 20 adult fish caught in the wild.

But experts and fishermen did not envisage great prospects for the artificially preserved species because the fish grew slowly and so were not suitable for commercial farming. The project was shut down, and once again Liu was pushed into a corner.

Despite scant research funding and doubts expressed by other experts, Liu borrowed money from friends and established an aquaculture technology extension lab to study farming methods for large yellow croakers.

"We lived and worked on an old boat bought from a local fisherman because we could not afford a brick-and-mortar house. We used bamboo canes as makeshift water pipes to save money," Liu said.

Despite those issues, by 1995, the team had solved the problem of slow growth and developed the whole process of cage farming, which laid the foundations for mass commercial farming of the fish. Liu immediately set out to promote cage farming of large yellow croakers.

|<< Previous 1 2 3 4 5 6 Next   >>|
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 狠狠色丁香久久婷婷综合五月 | 在线免费观看国产精品 | 久久精品中文字幕首页 | 欧美日韩国产在线观看一区二区三区 | 最新亚洲精品国自产在线观看 | yy6080久久亚洲精品 | 请以你的名字呼唤我免费观看 | 国产色婷婷精品综合在线 | 成人的天堂视频一区二区三区 | 精品久久久影院 | 黄色网址发给我 | 激情六月丁香婷婷 | 免费的色视频 | 国产精品嫩草影院在线 | 亚洲精品综合一区二区三区 | 亚洲第一区在线观看 | 亚洲一区二区三区一品精 | 一级做a爰片性色毛片视频图片 | 成年女人免费又黄又爽视频 | 国内精品视频 | 久久久久国产一级毛片高清片 | 一级毛片a女人刺激视频免费 | 国产精品亚洲精品不卡 | 天天成人| 国产在线每日更新 | 欧美一级毛片欧美毛片视频 | 精品视频在线免费 | 国产精品欧美亚洲韩国日本 | 网友自拍一区 | 国产一区二区精品久久91 | 玛雅视频网站在线观看免费 | 黄色大片在线视频 | 你懂的网站在线 | 中国黄色大片 | 一级做a爰性色毛片 | 免费高清欧美一区二区视频 | 玖玖玖免费观看视频 | 色很久 | 成年啪啪网站免费播放看 | 国产精品综合久成人 | 丁香婷婷在线观看 |