Accumulation of pirimicarb in sludge, grass carp, duckweed and water lettuce increased with time. In the meantime, concentration of pirimicarb in aquatic phase decreased continuously.
在底泥、草鱼、浮萍以及水浮莲中的积累都随时间的延续而增加，与此同时，水体中抗蚜威的浓度不断下降。
Results above showed that the meat quality of the grass carp could be improved by feeding in brackish water with the proper salinity of 7.5 salinity.
上述结果表明，半咸水暂养草鱼可改善其肌肉品质，适宜的盐度值为7.5。
Some kinds of fish will keep lakes and water-ways clear by eating water weeds. the Chinese grass carp is one. it eats large amounts of water milfoil and other weeds that grow under the water surface.
有些鱼类能吃掉杂草从而保持湖塘、水道的清洁。中国草鱼即是一例，它能吃掉大量狐尾草之类的长在水面下的杂草。
Some kinds of fish will keep lakes and water-ways clear by eating water weeds. the Chinese grass carp is one. it eats large amounts of water milfoil and other weeds that grow under the water surface.
有些鱼类能吃掉杂草从而保持湖塘、水道的清洁。中国草鱼即是一例，它能吃掉大量狐尾草之类的长在水面下的杂草。
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