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现场及实验室试验表明,近岸水中细菌丰度因时因地有较大差别,近岸水在潮周期中以高潮前后细菌量较低;海水在沉淀贮存过程中细菌丰度有明显变化,且与海水中营养物含量、贮存温度等有关;海水经沙滤后能减少细菌90％左右;回水中脱落苗进入贮水池,是贮水池中细菌数量增长10余倍的主要原因。
Field and laboratory tests showed that bacterial abundance in nearshore waters was greatly different from place to place, and the bacterial contents of nearshore waters were lower before and after the tide in tidal cycles. The abundance of bacteria in seawater changed significantly during storage and storage, And with the nutrient content in seawater, storage temperature, etc .; seawater by sand filtration can reduce bacteria about 90%; backwater in the fall seedlings into the cistern, is the reservoir of bacteria in the main reason for the increase in the number of more than 10 times.