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Chinese Journal of Applied Ecology ›› 1997, Vol. 8 ›› Issue (5): 541-544.

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Dissolving rates of N and P from newborn remains produced by feeding and their changing patterns in shrimp pond

Sun Yao, Li Jian, Cui Yi, Li Feng   

  1. Yellow Sea Fisheries Research Institute, CAFS, Qingdao 266071
  • Received:1995-09-06 Revised:1995-11-02 Online:1997-09-25 Published:1997-09-25

Abstract: Based on determinations of simulation experiment, the influence of newborn remains on environment in shrimp pond is estimated. The results show that the dissolving rates of N and P from two kinds of culturation newborn remains and their TN/TP and IP/TP ratios are varied in a greater range with the lapse of time, and the general changing patterns of the two newborn remains are similar. Because the remains produced by mussel decomposes very fast, it has a great short term influence on cultural environment, but its long term influence is no more serious than that of mixed feed. The newborn remain is a main pollutant source for shrimp cultural environment and its adjacent waters.

Key words: Nutrients, Dissolving rate, Newborn remains, Shrimp culturation, Xi’an City, normalization of temperature, heat island prediction, landscape pattern