天气预报 > 其他 > 养殖大闸蟹一亩田放多少蟹苗
养殖大闸蟹一亩田放多少蟹苗
更新时间: 2020-10-07 00:00:00  

1、苗种投放 稻田养蟹以选择3月到4月投苗为宜,此时稻田已耕种,有利于河蟹适应环境,可避免耕地时损害苗种,提高蟹种的成活率。

2、最适的苗种规格为每千克80只到每千克120只,放养密度为每亩500只到每亩600只,每块田放养规格尽量一致的苗种,以利于河蟹群体蜕壳同步,便于管理和投喂。

3、放养的方法是本地饲养的蟹苗运到后,稍做停留即可投放稻田,外地购进的苗种运到后,先适应3分钟到6分钟,然后放到池中浸泡1分钟到2分钟,再取出放置3分钟到5分钟,反复2次到3次,方可把蟹苗分散投入稻田,使蟹苗适应水环境。

关键词: 养殖 闸蟹 多少

养殖大闸蟹一亩田放多少蟹苗相关经验

天气预报

最新推荐

页面:/news/view-181597/ | 耗时:0.7920 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=181597 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=181597 LIMIT 0,1
select * from tbl_Articles_sphinx where id=181597 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1113023,1085888,2879794,1298135,1068494,1129801,1731830,1275229,1083208,3178684,1112754,1085480,1123343,1104822,1098507,1124356,115402,1128475,1107168,1072679,1123653,1055149,1063227,3291002,1098243,1367334,1091645,1114634,1066158,1065897) ORDER BY field (ArticleID,1113023,1085888,2879794,1298135,1068494,1129801,1731830,1275229,1083208,3178684,1112754,1085480,1123343,1104822,1098507,1124356,115402,1128475,1107168,1072679,1123653,1055149,1063227,3291002,1098243,1367334,1091645,1114634,1066158,1065897)