اهميت اندازه گيري pH ، قليائيت و استفاده از آهك بر توليد ميگوي پرورشي در استان هرمزگان

Importance Measurement of pH, Alkalinity and Limeing in Shrimp farming in Hormozgan Province

ﭼﮑﯿﺪه ﭘﺮورش ﻣﯿﮕﻮ در اﺳﺘﺎن ﻫﺮﻣﺰﮔﺎن ﯾﮑﯽ از ﺻﻨﺎﯾﻊ ﺑﺰرگ در زﻣﯿﻨﻪﻫﺎي ﺷﯿﻠﺎﺗﯽ ﻣﺤﺴﻮب ﻣﯽﮔﺮدد و روزﺑﻪروز ﺳﻄﺢ زﯾﺮ ﮐﺸﺖ ﻣﯿﮕﻮ، در اﺳﺘﺎن ﻫﺮﻣﺰﮔﺎن در ﺣﺎل اﻓﺰاﯾﺶ اﺳﺖ. ﺑﺎ اﻓﺰاﯾﺶ ﺳﻄﺢ زﯾﺮ ﮐﺸﺖ و اﻓﺰاﯾﺶ ﻣﯿﺰان ﺗﺮاﮐﻢ ذﺧﯿﺮهﺳﺎزي در اﺳﺘﺨﺮﻫﺎ، ﻣﻌﻤﻮﻟﺎً ﺗﻐﯿﯿﺮات pH اﻓﺰاﯾﺶ ﻣﯽﯾﺎﺑﺪ و اﻫﻤﯿﺖ اﻧﺪازهﮔﯿﺮي و ﮐﻨﺘﺮل ﺗﻐﯿﯿﺮات آن از اﻫﻤﯿﺖ ﺑﺎﻟﺎﯾﯽ ﺑﺮﺧﻮردار اﺳﺖ. ﻣﺘﻌﺎدل ﻧﮕﻪداﺷﺘﻦ ﻣﯿﺰان و ﺗﻐﯿﯿﺮاتpH ﯾﮑﯽ از ﻋﻮاﻣﻞ اﺻﻠﯽ در رﺷﺪ و ﺳﻠﺎﻣﺖ ﻣﯿﮕﻮ ﻣﺤﺴﻮب ﻣﯽﮔﺮدد. ﻣﻌﻤﻮﻟﺎً ﻓﺎﮐﺘﻮرﻫﺎ و ﻋﻮاﻣﻞ زﯾﺎدي در ﺗﻐﯿﯿﺮات pH در اﺳﺘﺨﺮﻫﺎي ﭘﺮورش ﻣﯿﮕﻮ اﻫﻤﯿﺖ دارد ﮐﻪ ﻣﯽﺗﻮان از ﻣﻬﻢﺗﺮﯾﻦ آنﻫﺎ ﺑﻪ ﺟﻨﺲ ﺧﺎك، ﻓﯿﺘﻮﭘﻠﺎﻧﮑﺘﻮنﻫﺎ و ﻣﻮﺟﻮدات درون اﺳﺘﺨﺮ و آب ورودي اﺳﺘﺨﺮﻫﺎ اﺷﺎره ﻧﻤﻮد. در راﺳﺘﺎي ﮐﻨﺘﺮل و ﺗﻌﺪﯾﻞ pH ﻣﻌﻤﻮﻟ ﺎً از آﻫﮏ ﭘﺎﺷﯽ اﺳﺘﻔﺎده ﻣﯽﮔﺮدد ﮐﻪ ﻣﯿﺰان و ﻧﻮع آﻫﮏ ﻣﻮرداﺳﺘﻔﺎده ﻧﯿﺰ ﺑﻪ ﻋﻮاﻣﻞ ﻣﺨﺘﻠﻔﯽ ﻣﺎﻧﻨﺪ زﻣﺎن اﺳﺘﻔﺎده از آﻫﮏ، آﻟﮑﺎﻟﯿﻨﯿﺘﯽ )ﻗﻠﯿﺎﺋﯿﺖ آب( و ﻋﻮاﻣﻞ دﯾﮕﺮي ﺑﺴﺘﮕﯽ دارد. ﻫﻤﭽﻨﯿﻦ اﺳﺘﻔﺎده از آﻫﮏ ﭘﺎﺷﯽ ﺑﺎﯾﺪ در ﺣﺪ ﻣﺘﻨﺎﺳﺐ ﺑﺎﺷﺪ ﺗﺎ ﺑﻪ ﮐﯿﻔﯿﺖ آب ﻟﻄﻤﻪاي وارد ﻧﮕﺮدد و ﯾﺎ ﺑﺎﻋﺚ رﺳﻮب ﻓﺴﻔﺮ در آب ﻧﺸﺪه و ﺑﻪ ﺷﮑﻮﻓﺎﯾﯽ ﻣﻨﺎﺳﺐ ﭘﻠﺎﻧﮑﺘﻮﻧﯽ ﮐﻤﮏ ﮐﻨﺪ. ﻋﻠﺎوه ﺑﺮ ﻣﯿﺰان pH ﻣﻨﺎﺳﺐ رﺷﺪ ﻣﯿﮕﻮ، ﻣﯽﺑﺎﯾﺴﺖ ﺗﻐﯿﯿﺮات آن در ﺣﺪ ﻧﺎﭼﯿﺰ ﺑﻮده ﺗﺎ ﮐﻤﺘﺮﯾﻦ اﺛﺮات ﻣﻨﻔﯽ را ﺑﺮ ﻣﯿﮕﻮ داﺷﺘﻪ ﺑﺎﺷﺪ. در اﯾﻦ ﻣﻘﺎﻟﻪ ﺑﺮ اﻫﻤﯿﺖ ﺗﻐﯿﯿﺮات pH و ﻧﺤﻮة ﺗﻐﯿﯿﺮات آن در اﺳﺘﺨﺮﻫﺎي ﭘﺮورش ﻣﯿﮕﻮ ﭘﺮداﺧﺘﻪ ﺷﺪه اﺳﺖ و ﻫﻤﭽﻨﯿﻦ اﻫﻤﯿﺖ اﺳﺘﻔﺎده از آﻫﮏ ﭘﺎﺷﯽ و ﮐﺎرﺑﺮد آﻟﮑﺎﻟﯿﻨﯿﺘﯽ ﻧﯿﺰ در ﺗﻐﯿﯿﺮات pH ﺑﻪﺻﻮرت ﻣﺨﺘﺼﺮ ﺑﯿﺎن ﮔﺮدﯾﺪه اﺳﺖ.

Shrimp farming in Hormozgan province is one of the major industries in the field of aquaculture and shrimp farming area is increasing day to day in Hormozgan province. As the area under farming increases and the amount of storage density in the pond increases, pH changes usually increase and the importance of measuring and controlling its changes is of high importance. Keeping balance and pH changes is one of the key factors in shrimp growth and health. Many factors and factors are important in pH changes in shrimp ponds. The most important factors are soil text, phytoplankton and organisms in the pond and inlet water of the ponds. In order to control and adjust the pH, lime spraying is usually used, and the amount and type of lime used also points to various factors such as lime use, alkalinity (water alkalinity) and other factors. The use of lime should also be proportionate so as not to impair water quality or cause phosphorus deposition in the water and contribute to proper planktonic bloom. In addition to the appropriate pH value for shrimp growth, its variation must be minimal to have the least negative effects on shrimp. In this paper, the importance of pH changes and their changes in shrimp ponds is discussed, and the importance of lime application and alkalinity application in pH changes is briefly discussed