كليدواژه :
DOP , ﭘﯿﺎز , DRIS , ﻏﻠﻈﺖ ﺑﻬﯿﻨﻪ , روش انحراف از درصد بهينه , روش تلفيقي تشخيص و توصيه
چكيده فارسي :
براي تعيين شاخص هاي انحراف از درصد بهينه (DOP) و روش تلفيقي تشخيص و توصيه (DRIS) ارزيابي وضعيت ﺗﻐﺬﯾﻪاي ﭘﯿﺎز Allium cepa L.)( و ﻣﻘﺎﯾﺴﻪ دو روش ﻣﺬﮐﻮر، ﻧﻤﻮﻧﻪﻫﺎي ﺑﺮگ از 50 ﻣﺰرﻋﻪ ﺟﻤﻊآوري و ﻏﻠﻈﺖﻫﺎي ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ Cu، Zn ،Mn ،Fe ،Mg ،Ca ،K ،P ،N و B ﺗﻌﯿﯿﻦ ﺷﺪﻧﺪ. ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﻣﻘﺪار ﻋﻤﻠﮑﺮد، ﻣﺰارع ﺑﻪ دو ﮔﺮوه، ﻣﺰارع ﺑﺎ ﻋﻤﻠﮑﺮد ﺑﺎﻻ و ﭘﺎﯾﯿﻦ ﺗﻘﺴﯿﻢ ﺷﺪﻧﺪ. ﻧﺮمﻫﺎي DRIS ﺑﺮاي ﻧﺴﺒﺖﻫﺎي ﻣﺨﺘﻠﻒ ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﺗﻌﯿﯿﻦ ﺷﺪﻧﺪ. ﺷﺎﺧﺺﻫﺎي DRIS ﺑﺮاي ارزﯾﺎﺑﯽ ﺗﻌﺎدل ﺗﻐﺬﯾﻪاي ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﻣﺤﺎﺳﺒﻪ ﺷﺪﻧﺪ. ﺷﺎﺧﺺﻫﺎي DOP از ﻏﻠﻈﺖﻫﺎي ﺑﻬﯿﻨﻪ ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﺣﺎﺻﻞ از رواﺑﻂ ﺑﯿﻦ ﺷﺎﺧﺺﻫﺎي DRIS ﺗﻌﯿﯿﻦ ﮔﺮدﯾﺪ. ﻏﻠﻈﺖﻫﺎي ﺑﻬﯿﻨﻪ ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﺣﺎﺻﻞ از رواﺑﻂ ﺑﯿﻦ ﺷﺎﺧﺺﻫﺎي DRIS و ﻏﻠﻈﺖ ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﺑﺎ در ﻧﻈﺮ ﮔﺮﻓﺘﻦ ﺷﺎﺧﺺ DRIS ﺑﺮاﺑﺮ ﺑﺎ ﺻﻔﺮ ﻣﺤﺎﺳﺒﻪ ﮔﺮدﯾﺪ. ﻏﻠﻈﺖ ﺑﻬﯿﻨﻪ، ﺑﺮاي ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﭘﺮﻣﺼﺮف Ca ،K ،P ،N و Mg ﺑﻪﺗﺮﺗﯿﺐ 2/94، 0/27، 4/40، 1/82 و 25/ 0درﺻﺪ و ﺑﺮاي ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﮐﻢﻣﺼﺮف Cu ،Zn ،Mn ،Fe و B ﺑﻪﺗﺮﺗﯿﺐ 107، 48، 19، 13 و 26 ﻣﯿﻠﯽﮔﺮم ﺑﺮ ﮐﯿﻠﻮﮔﺮم ﺗﻌﯿﯿﻦ ﺷﺪﻧﺪ. از ﻟﺤﺎظ ﻣﯿﺎﻧﮕﯿﻦ ﺷﺎﺧﺺﻫﺎي DRIS ، ﺗﺮﺗﯿﺐ ﻧﯿﺎز ﻏﺬاﯾﯽ ﺑﺮاي ﻋﻨﺎﺻﺮ ﮐﻢﻣﺼﺮف و ﭘﺮﻣﺼﺮف ﺑﻪﺻﻮرت Cu>Ca>K=Mn>P>B>Mg>Zn>N>Fe در ﻣﺰارع ﺑﺎ ﻋﻤﻠﮑﺮد ﭘﺎﯾﯿﻦ ﺑﻪدﺳﺖ آﻣﺪ. از ﻟﺤﺎظ ﻣﯿﺎﻧﮕﯿﻦ ﺷﺎﺧﺺﻫﺎي روش DOP، ﺗﺮﺗﯿﺐ ﻧﯿﺎز ﻏﺬاﯾﯽ ﺑﺮاي ﻋﻨﺎﺻﺮ ﭘﺮﻣﺼﺮف و ﮐﻢﻣﺼﺮف ﺑﻪﺻﻮرت Ca>K>Cu>P>B>Mn>Mg>N>Fe>Znﺑﺮاي ﻣﺰارع ﺑﺎ ﻋﻤﻠﮑﺮد ﭘﺎﯾﯿﻦ ﺑﻪدﺳﺖ آﻣﺪ. ﻣﻘﺎﯾﺴﻪ ﺷﺎﺧﺺﻫﺎي DRIS ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ ﭘﺮ ﻣﺼﺮف و ﮐﻢ ﻣﺼﺮف ﺑﺎ ﺷﺎﺧﺺﻫﺎي DOP ﻧﺸﺎن داد ﮐﻪ در ﻫﺮ دو ﺷﺎﺧﺺ ﻋﻨﺎﺻﺮ ﮐﻠﺴﯿﻢ، ﭘﺘﺎﺳﯿﻢ و ﻣﺲ ﻣﻨﻔﯽﺗﺮﯾﻦ ﺷﺎﺧﺺ در ﻣﺰارع ﺑﺎ ﻋﻤﻠﮑﺮد ﮐﻢ ﺑﻮدﻧﺪ ﮐﻪ ﺣﺎﮐﯽ از ﺗﺸﺎﺑﻪ زﯾﺎد ﺑﯿﻦ دو روش در ﺗﻔﺴﯿﺮ ﻧﺘﺎﯾﺞ ﺗﺠﺰﯾﻪ ﺑﺮگ ﻣﯽﺑﺎﺷﺪ. درﺑﺎره ﮐﺎرآﯾﯽ ﻧﺮمﻫﺎي DRIS و DOP ﺗﻌﯿﯿﻦ ﺷﺪه زﻣﺎﻧﯽ ﻣﯽﺗﻮان اﻇﻬﺎر ﻧﻤﻮد ﮐﻪ از درﺳﺘﯽ ﻧﺮمﻫﺎي ﺗﻌﯿﯿﻦ ﺷﺪه از ﻃﺮﯾﻖ آزﻣﺎﯾﺶ-ﻫﺎي ﮐﻮدي در ﻣﺰارع ﭘﯿﺎز ﺑﺎ ﻋﻤﻠﮑﺮد ﮐﻢ اﻃﻤﯿﻨﺎن ﺣﺎﺻﻞ ﺷﻮد..
چكيده لاتين :
Determining deviation from optimum percentage (DOP) index and diagnostic recommendation integrated system (DRIS) index for evaluation of nutritional status of onion (Allium cepa L.) and also for comparison of these two procedures, leaf samples were collected from 50 fields and N, P, K, Ca, Mg, Fe, Mn, Zn, Cu and B concentrations were determined. On the bases of crop yield, the fields were divided into two groups with low and high yielding populations. DRIS norms were determined for the different nutrients ratios. DRIS indices were calculated to evaluate nutrients balances. The optimum concentrations as reference values were used for the calculating of DRIS indices. The optimum nutrients concentrations in leaf were calculated from relationships between DRIS index and nutrient concentrations considering the fitted models show points where the DRIS indices are equal to zero. The optimum macro nutrient concentrations were, 2.94, 0.27, 4.40, 1.82, and 0.25 % N, P, N, Ca, Mg, and for micro nutrients107, 50, 18, 13, 27 mg/kg for Fe, Mn, Zn, Cu, B, respectively.. On the bases of DRIS indexe means, the respective for requirement of micro nutrients and macro nutrients were Cu>Ca>K=Mn>P>B>Mg>Zn>N>Fe in low yielding farms. On the bases Means of DOP indexes, the respective for requirement of micro nutrients and macro nutrients were Ca>K>Cu>P>B>Mn>Mg>N>Fe>Zn in low yielding farms. Comparison of the DRIS indices for macro and micro nutrients with the DOP indices revealed that Ca, K and Cu were the most deficient elements in all low-yielding fields showing that both methods provide similar information in the interpretation of results of leaf analysis. To validate DRIS norms and verify the efficiency of DRIS and DOP as methods for improving the interpretation of analysis results of leaf, the fertilizer experiments should be conducted on onions in a low-yielding field.
