《水产养殖水质调控》ppt课件

2024-01-18 16:13 本页面

【正文】 or (water expression) in rich water肥水“水华”类型 The phenomenon that the water shows evident color owing to the mass propagation of plant plankton is call water expression. It can be divided into the follow types according to its apperance （ Table12） : Type of water expression Water appearance The position of algae Water evaluation solution nonflagellate even and stable stable water cloudiness flagellate lightand shade good water but with the danger of going bad membranaceous blue algae with simulated vacuole covered the water surface Good and bad are all possible （ 3） Judge the water quality by it39。s color and expression （ Table13） 根据水色、水华类型判断水质 water quality grade water color water expression type good water brown, yellowbrown, greenbrown cloudiness, solutionlike bad water blue、 purple membranaceous mon water green solutionlike 2. transparency透明度 （ 1） Water transparency and the phytoplankton 透明度与浮游植物的关系 （ 2） Water transparency and the water fertility 透明度与水体肥度 （ Table14） Water fertility tran

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