ارزيابي سيستم هاي آبياري باراني شهرستان الشتر با استفاده از نرم افزار Surfer و مقايسه الگوي پاشش

The study and evaluation of fixed classic rain irrigation system with moving sprinkler and comparision of spray pattern by using the surfer software (Aleshtar city of Lorestan state)

اﯾﺮان از دﯾﺮﺑﺎز ﺑﺎ ﻣﺸﮑﻞ ﮐﻢآﺑﯽ ﺑﺮاي ﮐﺸﺎورزي ﻣﻮاﺟﻪ ﺑﻮده اﺳﺖ. ﺑﺎﺗﻮﺟﻪ ﺑﻪ ﭘﺎﯾﯿﻦ ﺑﻮدن راﻧﺪﻣﺎن آﺑﯿﺎري ﯾﮑﯽ از راهﻫﺎي ﺻﺮﻓﻪﺟﻮﯾﯽ در ﻣﺼﺮف آب، اﺻﻼح ﺳﯿﺴﺘﻢﻫﺎي آﺑﯿﺎري ﻫﻢﭼﻮن آﺑﯿﺎري ﺗﺤﺖ ﻓﺸﺎر و ﮔﺴﺘﺮش آن از ﺿﺮورﯾﺎت اﺳﺖ. ﻧﺘﺎ ﯾﺞ ﺣﺎﺻﻞ از ﺗﺤﻘﯿﻖ در ﻣﻮرد آزﻣﺎﯾﺸﺎت ﮐ ﯿﻔﯿﺖ ﺧﺎك و آب ﻣﺰارع آزﻣﺎﯾﺸﯽ ﻧﺸﺎن داده ﮐﻪ ﺧﺎك ﺗﯿﻤﺎرﻫﺎي ﻣﻮرد آزﻣﺎﯾﺶ ﺑﻪ واﺳﻄﻪ داﺷﺘﻦ SAR و ECﭘﺎﯾﯿﻦ در ﻃﺒﻘﻪﺑﻨﺪي ﺧﺎكﻫﺎي ﻣﺘﺄﺛﺮ از ﻧﻤﮏ در ﮔﺮوه ﻧﺮﻣﺎل ﻗﺮار دارد و ﻫﻤﭽﻨﯿﻦ آب ﻣﺰرﻋﻪ آزﻣﺎﯾﺸﯽ ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﻃﺒﻘﻪﺑﻨﺪي اراﺋﻪ ﺷﺪه ﺗﻮﺳﻂ آزﻣﺎﯾﺸﮕﺎه ﺷﻮري ﺧﺎك آﻣﺮﯾﮑﺎ در ﮐﻼس C2 - S1 ﻗﺮار ﻣﯽﮔﯿﺮد ﮐﻪ ﺑﺮاي آﺑﯿﺎري ﺧﻮب ﻣﯽﺑﺎﺷﺪ. ﺑﺎﺗﻮﺟﻪ ﺑﻪ ﻧﺘﺎﯾﺞ ﺣﺎﺻﻠﻪ ﺑﻪ ﻃﻮرﮐﻠﯽ ﮐ ﯿﻔﯿﺖ آب و ﺧﺎك اﯾﻦ ﻣﺰرﻋﻪ ﺟﻬﺖ آﺑﯿﺎري ﺑﺎراﻧﯽ ﻣﺤﺪودﯾﺖ ﮐﺎرﺑﺮي ﻧﺪارد. ﻧﺘﺎﯾﺞ ﺣﺎﺻﻞ از ﯾﮑﻨﻮاﺧﺘﯽ ﺗﻮزﯾﻊ آب در رﺑﻊ ﭘﺎﯾﯿﻦ ، ﺿﺮﯾﺐ ﯾﮑﻨﻮاﺧﺘﯽ ﮐﺮﯾﺴﺘﯿﺎﻧﺴﻦ و ﻣﻨﺤﻨﯽﻫﺎي ﻫﻢ ﻋﻤﻖ آﺑﯿﺎري ﺑﺎﺗﻮﺟﻪ ﺑﻪ ﻣﻘﺎدﯾﺮ ﭘﯿﺸﻨﻬﺎدي ﻣﺮﯾﺎم و ﮐﻠﺮ ﺑﺮاي CUو DUﻧﺸﺎن داد ﮐﻪ ﻣﯿﺰان CUو DUﺑﺮاي ﻣﺰارع H ، A، V ،Mو Sﮐﻤﺘﺮ از ﻣﯿﺰان ﭘﯿﺸﻨﻬﺎدي ﻣﺮﯾﺎم و ﮐﻠﺮ ﺑﻮده اﺳﺖ. ﻫﻤﭽﻨﯿﻦ ﻧﺘﺎﯾﺞ اﯾﻦ ﺗﺤﻘﯿﻖ ﻧﺸﺎن داد ﮐﻪ در ﻣﺰارع M ،H ، Aﭘﺮ آﺑﯿﺎري و در ﺰارع Vو S ﮐﻢآﺑﯿﺎري اﻧﺠﺎم ﮔﺮﻓﺘﻪ اﺳﺖ

For a long time, Iran faces to water deficit problem in agriculture. According to low random of irrigation, one of the economic ways in water use is repairing the irrigation systems such pressured irrigation and its extension. In this study the results of soil quality experiments and experimental farm water gage, show that the soils had low range of SAR and EC and were in normal group in C2-S1 class. According to the results, the water and soil quality of this farmlands, has no limitation for sprinkler irrigation. The results of water distributions uniformity on low quarter, the Christiansen uniformity coefficient and Co-depth curves showed CU and DU values for the A. H, M, V and S was less than Meryam and Koler suggested values for CU and DU. Also the results show the full irrigation was happened in A, H, M farms, and deficit irrigation was happened in V, S farms.