تعیین مناسبترین شرایط آبیاری نواری به‌منظور افزایش راندمان کاربرد آب با استفاده از مدل SRFR

نوع مقاله: مقاله پژوهشی

نویسندگان

1 عضو هیئت علمی ، بخش آبیاری و فیزیک خاک، مؤسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.

2 استادیار، دکتری، عضو هیئت علمی ، بخش آبیاری و فیزیک خاک، مؤسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج

3 ،عضو هیئت علمی ، بخش آبیاری و فیزیک خاک، مؤسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج،

چکیده

چکیده:
نظر به اینکه مدیریت آبیاری و ابعاد نوار در منطقه حمیدیه به­صورت سنتی اجرا می شوند، اندازه گیری ها در شرایط فعلی نشان می دهد که راندمان کاربرد آب در دشت حمیدیه خوزستان در آبیاری نواری پایین است (حدود 30 درصد). از این رو ارائه راهکارهایی مانند تعیین طول و عرض نوار، دبی ورودی به نوار و  تعیین زمان آبیاری متناسب با آنها نقش مهمی در افزایش راندمان کاربرد آب در این منطقه خواهد داشت. لذا استفاده از مدل های شبیه­سازی آبیاری سطحی مانند SRFR4.1.3 که بتوانند تاثیر این پارامتر ها را به صورت توام بررسی نمایند از اهمیت بالایی برخوردار است. در این پژوهش اطلاعات شیب، نفوذ پذیری و ابعاد نوار در حمیدیه اندازه گیری شد. با استفاده از اطلاعات اندازه گیری شده، مدل جامع و کاربردی  SRFR4.1.3 واسنجی شد. تغییرات راندمان کاربرد آب با لحاظ تغییرات طول و عرض نوار، دبی، مدت زمان آبیاری با استفاده از مدل SRFR4.1.3  مورد بررسی قرار گرفت.  نتایج نشان داد که در شیب اراضی منطقه (2/0 درصد)، طول نوار 180 متر، عرض10 متر،  دبی بین 15 تا 18 لیتر برثانیه و زمان آبیاری  3 تا 5/3 ساعت در اجرای آبیاری نواری می­توان راندمان کاربرد آب را به 40 تا 45 درصد افزایش داد. که این نتیجه در راستای کاهش تلفات و مصرف بهینه آب بسیار حائز اهمیت است.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of the best situation of border irrigation for increasing application Efficiency using SRFR model

نویسندگان [English]

  • Arash Tafteh 1
  • , Mohammad Reza Emdad 2
  • Saeed Ghalebi 3
1 1-Assistant professor of Department of Irrigation and soil physics, Soil and Water Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.
2 Department of Irrigation and soil physics, Soil and Water Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
3 Instructor of Department of Irrigation and soil physics, Soil and Water Research Institute, Agricultural Research Education and Extension Organization (AREEO
چکیده [English]

Abstract:
Due to this fact that irrigation management and border dimensions are traditionally used in Hamidieh region, measurements in recent condition showed that, application efficiency in Hamidieh plain is low and around 30 %. Therefore, providing solutions such as determining the length and width of the border, inflow rate and also determining the appropriate irrigation time will have an important role for increasing water application efficiency in this area. Therefore using appropriate simulation models like SRFR that can consider all important parameters related to surface irrigation improvement, has high importance. In this investigation, slope, Infiltration and border dimensions were measured in Hamidieh region.Using measured data, the SRFR4.1.3 model was calibrated. The variation of water application efficiency regarding to border dimensions, inflow rate and irrigation timing using SRFR model were evaluated. Results showed that with this slope (0.2%), the length of the border 180 m, the border width equal to 10 m, the discharge between 15 to 18 liter per second, and the irrigation time equal to 3 to 3.5 hours, the water application efficiency can be increased by 40 to 45 percent. This result is very important for reducing irrigation losses and optimizes water consumption.

کلیدواژه‌ها [English]

  • Key words: border irrigation
  • dimension of border
  • inflow discharge and Hamidieh

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