对虾养殖中新生残饵耗氧动态及其规律的研究

本文根据实验模拟研究的结果，估算了由配合饵料和贻贝肉形成残饵后３６天时间内的耗氧量，并讨论了其耗氧动态和规律。残饵耗氧量的变化范围为４．０９～１７．６１ｇ／ｋｇ·ｄ。残饵耗氧曲线随残饵形成时间的不同而显著变化，且始终呈二次曲线衰减形式，在其演变过程中，该二次曲线方程的二次项系数由负数逐渐演变为正数，并最终接近于污染虾塘底质的耗氧曲线。配合饵料和贻贝肉的耗氧曲线变化形式相近，但程度上存在较大差异。另外，本文还初步探讨了残饵的耗氧高峰期，估算了残饵在虾塘底质总耗氧量中的作用。

STUDY OF OXYGEN DEMAND OF NEWBORN FEED REMAINS AND ITS CHANGE DURING SHRIMP CULTURE

S It was discussed about oxynen demand of newborn remains produceded by two kinds of feeds and their changes during shrimp culture, accordig to the results of on-the-spot simulating determination. Oxygen consumption curves changed with the time of producing the remains and all appeared the form of quadratic curve reduce. Quadratic term coefficients changed from positive to negative value. At last, it approached to total oxygen consumption curve of sediment of areas polluted by the remains in shrimp pond. The oxygen consumption curves of the remains produced by two kinds of feeds and its change were similar, but there was a large difference at the extend. It was also found that there was a largest oxygen demand value at 9th day after the remains were produced and the oxygen demand of newborn feed remains played a important role in toatl oxygen demand of sediment in shrimp ponds.