论文部分内容阅读
(一)分层混养 生活在各种水域环境中的养殖鱼类,各自选择喜食的饲料而生长繁衍。鲢、鳙食上层浮游生物;鳊、草鱼食中下层的草类;青鱼食螺蛳、蚬等底栖动物;鲮食有机碎屑和底泥表
(A) layered polyculture Live in a variety of aquaculture water environment, their choice of feed to feed the growth and reproduction. Silver carp, pomfret upper layer plankton; pomfret, grass carp grass in the lower middle class; herring snail, pomfret and other zoobenthos; edible organic debris and sediment table