(2) Rational development of mariculture. In order to reduce eutrophication caused by mariculture, the following measures should be taken:
① According to the environmental conditions of the water area, select some breeding varieties that can purify the water quality, reasonably determine the breeding density and control the breeding area.
② Multi-species polyculture, rotation culture and stereoscopic culture, especially fish, shrimp, shellfish and algae polyculture, and establish an ecological culture system.
(3) Improve the culture technology, improve the bait composition and feeding technology, so as to facilitate the feeding of cultured organisms, reduce the bait residue and reduce the pollution of water quality and sediments.
④ Sewage and wastes from pond culture cannot be directly discharged into seawater, and should be filtered gradually.