摘要
研究了海水围塘混合养殖生态系统的氮磷循环,建立了N、P物质平衡方程。结果表明:海水围塘混合养殖中N的利用率较虾池等精养封闭系统要低,而P的利用率则与之持平;海水围塘混养中N、P的输入主要来源是投饵和肥料,除了10%左右被利用收获外,其余的大部分被换水、渗漏排出,污染附近海域,另有部分沉积在底泥中,形成内源污染。
We study the nitrogen and phosphorus balance of mixed culture ecosystem in seawater pond and establish N, P material balance equation. The results show that utilization rate of N in seawater pond mixed culture is lower than that of closed system such as base pond and shrimp pond, while the utilization of P remains the same as that of closed system. The sources of N and P in seawater pond mixed culture are mainly from feeding and fertilizer. However, only about 10% is utilized, the majority part is carried away by hydropower and leakage to neighboring waters, which causing pollution, and another part of N, P is deposited in bed mud, which forming endogenous pollution source.
出处
《井冈山大学学报（自然科学版）》
2010年第2期32-35,共4页
Journal of Jinggangshan University (Natural Science)
基金
连云港市科技攻关项目(CN0646)
连云港师专"青蓝工程"项目
关键词
海水养殖
混合养殖
物质平衡
N
P
seawater culture
mixed culture
material balance
N
P
