كاربرد روش انحراف از درصد بهينه براي تعيين تعادل تغذيه‌اي باغ‌هاي ليمو‌‌ترش در استان هرمزگان

Application of Deviation from Optimum Percentage (DOP) to Determine the Nutritional Balance of Sour Lemon Gardens in Hormozgan Province

ميانگين عملكرد ليموترش در باغ ­هاي كشور، در مقايسه با ميانگين جهاني، كمتر است. شاخص انحراف از درصد بهينه )DOP( روﺷﯽ ﺳﺎده اﺳﺖ ﮐﻪ ﻣﯽﺗﻮان ﺑﺮاي ﻃﺮاﺣﯽ ﺑﺮﻧﺎﻣﻪﻫﺎي ﮐﻮددﻫﯽ ﻣﺘﻌﺎدل اﺳﺘﻔﺎده ﮐﺮد. اﯾﻦ ﺷﺎﺧﺺ ﻧﺸﺎندﻫﻨﺪه وﺿﻌﯿﺖ ﺗﻐﺬﯾﻪاي ﮔﯿﺎه و ﮐﻤﺒﻮد و ﯾﺎ زﯾﺎدي ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ در ﮔﯿﺎه ﺑﻮده و ﻣﯽﺗﻮاﻧﺪ ﺑﺮاي اوﻟﻮﯾﺖﺑﻨﺪي ﻧﯿﺎز ﮔﯿﺎه ﺑﻪ ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ اﺳﺘﻔﺎده ﺷﻮد. ﺑﺮاي اﻧﺠﺎم اﯾﻦ ﺗﺤﻘﯿﻖ، ﺳﻪ ﻣﻨﻄﻘﻪ ﻣﻬﻢ اﺳﺘﺎن ﺷﺎﻣﻞ ﻫﺸﺘﺒﻨﺪي، ﻣﯿﻨﺎب ﻣﺮﮐﺰي و رودان اﻧﺘﺨﺎب و در ﻫﺮ ﻣﻨﻄﻘﻪ 20 ﺑﺎغ ﻟﯿﻤﻮﺗﺮش در ﻧﻈﺮ ﮔﺮﻓﺘﻪ ﺷﺪ )ﺟﻤﻌﺎً 60 ﺑﺎغ(. ﻧﻤﻮﻧﻪﺑﺮداريﻫﺎي ﻣﺮﺑﻮط ﺑﻪ ﺑﺮگ و ﻫﻤﭽﻨﯿﻦ اﻧﺪازهﮔﯿﺮي ﻋﻤﻠﮑﺮد اﻧﺠﺎم ﺷﺪ. ﻣﺘﻮﺳﻂ ﺷﺎﺧﺺ اﻧﺤﺮاف از درﺻﺪ ﺑﻬﯿﻨﻪ ﺑﺮاي ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﻣﺤﺎﺳﺒﻪ ﺷﺪ. ﺑﺮ اﯾﻦ اﺳﺎس ﺗﺮﺗﯿﺐ ﻧﯿﺎز ﺑﻪ ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ در ﺑﺎغﻫﺎي ﻟﯿﻤﻮﺗﺮش اﺳﺘﺎن ﻫﺮﻣﺰﮔﺎن ﺑﻪﺻﻮرت Mn> Fe> Zn> N> K> Cu> Cl> B> P ﺗﻌﯿﯿﻦ ﮔﺮدﯾﺪ. ارﻗﺎم ﻣﺮﺟﻊ ﺑﻪدﺳﺖ آﻣﺪه در اﯾﻦ ﺗﺤﻘﯿﻖ را ﻣﯽﺗﻮان در ﻫﺮ ﺑﺎغ ﻟﯿﻤﻮﺗﺮش اﺳﺘﺎن ﻫﺮﻣﺰﮔﺎن ﺑﺮاي ارزﯾﺎﺑﯽ ﺗﻌﺎدل ﺗﻐﺬﯾﻪاي ﺑﺎ روش DOP اﺳﺘﻔﺎده ﮐﺮد و ﺗﺼﻤﯿﻢﮔﯿﺮي ﻣﻨﺎﺳﺐ را اﻧﺠﺎم داد. ﻫﻤﭽﻨﯿﻦ ﺗﻮﺻﯿﻪ ﻣﯽﺷﻮد ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﻧﺘﺎﯾﺞ اﯾﻦ ﺗﺤﻘﯿﻖ، ﻣﺼﺮف ﻋﻨﺎﺻﺮ ﮐﻢﻣﺼﺮف ﻣﻨﮕﻨﺰ، آﻫﻦ و روي در اﯾﻦ ﺑﺎغﻫﺎ در اوﻟﻮﯾﺖ ﻗﺮار ﮔﯿﺮد.

The average yield of sour lemon orchards in the country is lower as compared to the global average. Deviation from optimum percentage (DOP) is a simple method that can be used to design a balanced fertilization program.The index indicates the nutritional status and nutrient deficiency or excess, and can be used to prioritizes the plants nutrients need. For this study, three important areas of Hashtbandi, central Minab and Roodan in the province were selected, and 20 gardens of sour lemon were considered in each area (total 60 gardens). The sampling of the leaves as well as yield measurement were done. The average of DOP was calculated for the nutrients. According to this, nutritional priorities were determined as Mn> Fe> Zn> N> K> Cu> Cl> B> P for sour lemon gardens in Hormozgan province. The reference values that was obtained in this study, could be used in Hormozgan gardens sour lemon to evaluate the nutritional balance with DOP method and to make as appropriate decision. Consumption ofthe micronutrients manganese, iron and zinc in these gardens was a priority based on the results of this study.