水产生态养殖测水方法（Water measuring method for aquatic ecological culture）.docVIP

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水产生态养殖测水方法（Water measuring method for aquatic ecological culture）.doc

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水产生态养殖测水方法（Water measuring method for aquatic ecological culture）

水产生态养殖测水方法（Water measuring method for aquatic ecological culture） Water is an important environmental conditions of aquatic animal life, survival, environment directly affects the growth and development of fish and shrimp. As the saying goes profound feelings, as the survival of mankind cannot do without air, so that the water quality is directly related to the various aspects of cultivation benefit, breeding and breeding effect of risk factors. The deterioration of water quality is one of the main reasons for the morbidity of the cultured object, but it is not formed in one or two days, but caused by a variety of comprehensive reasons for a long time. The change of water quality monitoring as we usually can achieve uninterrupted, timely find problems and adopt corresponding measures to deal with, can prevent the deterioration of aquaculture water environment, so as to make aquaculture object less sick or ill. water temperature Water temperature directly affects the metabolism of fish and its effects on growth, development and reproduction are affected by water temperature, water temperature of different breeding objects are different, the most suitable for the growth temperature of 18 DEG ~26 DEG, in suitable temperature range, with the increase of temperature, increase food intake, growth accelerated. However, warm water fishes such as tilapia begin to die at 10 ~14 C, and the optimum growth temperature of cold water fishes such as rainbow trout is 10 ~18. In winter, when the water temperature is below 4, the fish is prone to frostbite. The value of pH PH value is an important index of water quality. The optimum pH value for fish and shrimp alkaline environment. Freshwater aquaculture generally requires 6.5~8.5, and the optimum range is 7~8.5. All-match Zhuang: in the water pH value is too high or too low, the growth of fish were negative. PH value below 4.4, fish mortality rate of 7%~20%, less than 4, all died, pH value higher than 10.4, mortality rate of 20%~89