摘要
目前水产养殖发展迅速,规模越来越大,方式多种多样,在全国广泛分布。养殖水体大量投饵,因此水体底部存在大量未被吸收的饵料,直接影响养殖水体和沉积物中氮磷等元素的含量,加之养殖品自身的排泄物影响,使得养殖水体富营养化程度普遍偏高。针对问题的解决办法,本文提出可以通过养殖饵料精加工,提高吸收率;多品种混养,充分利用空间和饵料;种植水生植物控制水体和沉积物中氮磷含量等,并说明今后研究的方向和重点。
Nowadays, aquaculture is widely distributed all over the country with rapid development, increasing scale and various mode. There are lots of fodder at the bottom of water because of overfeeding, which has a direct impact on the concentration of nitrogen and phosphorous between water and sediment. ,in addition to waste products made by fish, making eutrophication become high gradually. To solve the problems, this thesis provide some ways ： improve the absorption of fodder; multi-species polycuhure, make full use of space and food;cultivation of aquatic plants which could control the concentration of nitrogen and phosphorous in water and sediment.
出处
《江西科学》
2009年第4期617-622,共6页
Jiangxi Science
关键词
水产养殖
富营养化
影响
Aquaculture, Eutrophication, Impact
