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)
Pigment
Color
Algae
chlorophyll
green
green algae, euglena
yellow pigment
yellow, yellow-brown
diatom, golden algae, dinoflagellate, Cryptomanas
phycobilin
leucocyan
blue, blue-green
blue algae
rhodophyll
purple
blue algae
(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):