文档介绍：水产养殖水质调控 Water quality control of aquaculture Main factors affecting water quality ? Chemistry: 工业,农业,人为活动? Biology: , PH of water quality control 养殖水体水质调控方法 control ? Use chemicals to control PH and toxic ( 有毒) gas. Physical control bottom layer quality ?改善底质 resource treatment ?水源处理 exchange or refill ?更换或补充新水 Biological control 生物控制?1、 Increse useful zoonplankton through artificial culture. ?2、 Microecologics 微生态制剂?3、 Photosynthetic bacteria 光合细菌?4、 Higher aquatic plants 水生植物 Biological control of water quality ?养殖水体水质生物调控措施 Obsercation of color and transparency 水色和透明度观察——“看水”? The fisherman observe the pond water mainly about 渔民看水主要依据 1. water color (water expression) 水色(水华) (1) The relationship between water color and plant plankton ( Table1-1 ) blue algae purple rhodophyll blue algae blue, blue-green l eucocyan phycobilin diatom, golden algae, dinoflagellate , Cryptomanas yellow, yellow- brown yellow pigment green algae, euglena green chlorophyll Algae Color Pigment (2) Water color (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 ( Table1-2 ):