天气预报 > 其他 > 河蟹人工繁殖幼体培育换水要注意什么
河蟹人工繁殖幼体培育换水要注意什么
更新时间: 2019-01-11 00:00:00  

蚤1 ~2期不换水或少换水,保持水质相对稳定。蚤3期日换

水1/4左右,蚤4期日换水1/2,蚤5期日换水3/5 ~ 4/5,大眼幼体阶段 大量换低盐度水,逐渐淡化池水。换水时盐度不能相差5%,水温不能相差正负2℃。换水要安装过滤网。

关键词: 河蟹 人工 繁殖 幼体 培育 注意 什么

河蟹人工繁殖幼体培育换水要注意什么相关经验

天气预报

最新推荐

页面:/news/view-1489432/ | 耗时:0.4739 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1489432 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1489432 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1489432 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1059801,1064323,1073407,1076554,1069833,1071992,1077826,1083140,2637805,1063213,1066578,1103275,1049030,1067795,1094923,1092113,1051599,1045825,1066018,1118338,1067933,1091177,1077599,1066132,1074843,1062140,1065485,1072314,1063165,1061830) ORDER BY field (ArticleID,1059801,1064323,1073407,1076554,1069833,1071992,1077826,1083140,2637805,1063213,1066578,1103275,1049030,1067795,1094923,1092113,1051599,1045825,1066018,1118338,1067933,1091177,1077599,1066132,1074843,1062140,1065485,1072314,1063165,1061830)