نوع مقاله : علمی - پژوهشی

نویسندگان

1 گروه مهندسی آب، دانشکده کشاورزی، دانشگاه زنجان

2 کارشناسی ارشد آبیاری و زهکشی، دانشکده کشاورزی، دانشگاه زنجان

چکیده

تحلیل روزهای قابل بارش از کلیدی­ترین عناصر هواشناسی مرتبط با بخش کشاورزی می­باشد، چرا که کمبود یا بارندگی بارش در طول فصل رشد خسارات سنگینی بر بخش کشاورزی علی الخصوص کشت دیم بر جای می­گذارد. لزوم پایش و تحلیل این پدیده هنگامی جلوه­گر می­نماید که توجه داشته باشیم بخش عمده­ای از اراضی کشاورزی، وابستگی مستقیم به بارش (مقدار و دفعات بارش) دارد. در این تحقیق تعداد روزهای بارندگی در ایستگاه سینوپتیک قزوین، به منظور تجزیه و تحلیل و آسیب­شناسی کشت محصول گندم دیم استان با استفاده از مدل­های آماری مبنای کار قرار گرفت. نتایج تحلیل آماری تعداد روزهای با بارندگی نشان دهنده آن است که در دوره­های ترسالی تعداد روزهای بارندگی در فصل کشت پاییزه با دوره بازگشت 5، 10، 25 و 50 ساله به ترتیب برابر 29، 32، 39 و 44 روز می­باشد. همچنین در دوره­های خشکسالی، تعداد روزهای قابل اعتماد بارندگی به ترتیب برابر 8، 4، 0 و 1 روز می­باشد. در این راستا به منظور بررسی و آسیب­شناسی کشت دیم در استان، تحلیل آماری تعداد روزهای بارندگی در طول فصل رشد برای محصول گندم انجام گرفت. نتایج این تحلیل نشان دهنده آن است که در دوره­های خشکسالی جهت کشت دیم مناسب نبوده و بارندگی قابل اعتمادی در طول دوره رشد به وقوع نخواهد پیوست..  

کلیدواژه‌ها

عنوان مقاله [English]

Pathology of Wheat Cultivation by Dry Farming in Qazvin Province By Statistical Analysis of Raining Days Approach

نویسندگان [English]

  • Mehdi Panahi 1
  • Mina Taheri 2

1 Department of Water Engineering, Faculty of Agriculture, Zanjan University, Zanjan

2 MSc. Student of Irrigation and Drainage, Faculty of Agriculture, Zanjan University, Zanjan

چکیده [English]

Analysis of raining days is one of the most significant elements of weather forecasting concerning agricultural section, since rainfall is the most unstable factors and shortage or rainfall during growing season may create heavy damages on agricultural section, particularly on dry farming. Necessity of monitoring and analysis of this phenomenon could be demonstrated when we consider that a great part of agricultural lands depends on rainfall (amount and number of times) directly. Meanwhile, the significant performance of farming products will be related to raining method also in irrigation agriculture section. In the present study, number of raining days in Qazvin synoptic station, to analyze and study pathologically wheat cultivation by dry farming in the province, statistical models were used. Results of statistical analysis of number of raining days demonstrated that number of raining days in wet years in autumn cultivation season with recurrence interval of 5, 10, 25 and 50 year based on 29, 32, 39 and 44 days, respectively. Furthermore, in dry years, number of raining reliable days can be 8, 4, 0 and 1 day. In this regard, to investigate and study pathologically dry farming in the province, a statistical analysis was performed about raining days during growing season for wheat product. Findings of the analysis showed that in dry periods, dry farming is not appropriate and no reliable rainfall will be occurred during growing period.

کلیدواژه‌ها [English]

  • Days of rain
  • Dry farming
  • Period of wet
  • Period of drought
  • Qazvin synoptic station

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