impact of irrigation management and emitters type on clogging in sari district
نویسندگان
چکیده
water crisis is one of the basic problems in the arid and drought prone areas like iran. this condition in the recent years has aggravated due to drought phenomenon. thus, using poor water quality has increased in areas where good quality is not available. in this study, in order to investigate clogging, 5 types of emitters including micro flapper, netafim, corona, axios and iran drip were tested at two different flow rates (8/6/4/2 l/h). the experiment was carried out in samandak village in sari district and had four irrigation management treatments including untreated well water (s1), acidification (s2), acidification-fertigation (s3), and fertigation (s4). the results showed that the netafim emitter (8 l/h) had minimum clogging while the micro flapper (2 l/h) had the maximum clogging among all of the tested emitters. also, acidification treatment (s2) had minimum clogging. the results indicated that in a given type of emitter, the flow rate reduction due to clogging decreased with increasing emitter flow. statistical analyses of the data showed that the effects of irrigation management factor and emitter factor were significant in variation of flow rate, but there was no significant interaction between these factors. study of the discharge coefficient of variation and coefficient of uniformity revealed that acidification was a management strategy in the control of emitter clogging and maintenance of high uniformity in the trickle irrigation systems.
منابع مشابه
effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars
این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...
the impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran
acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...
the influence of fertigation on clogging of some emitters in drip irrigation
introduction: an appropriate water resources management and planning is necessary due to the scarcity of water resources and rapidly growing world population. in this regard, selecting appropriate methods for irrigation is one of the most important issues. drip irrigation is a recent advanced irrigation method in which fertilizers can be efficiently applied along with irrigation water. drip fer...
متن کاملthe comparative impact of prompts and recasts in processing instruction versus meaningful output-based instruction on efl learners’ writing accuracy
the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...
اثر فاصله قطرهچکانها بر گرفتگی فیزیکی نوارهای آبیاری قطرهای
Drip irrigation is one of the new irrigation methods for optimum use of water resources and increase of irrigation efficiency. The emitters' clogging is the most important problem in these systems. The physical clogging is the most important factor in reducing the discharge and emission uniformity of emitters. The emitter position on the laterals and emitter spacing are the factors that affect ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
پژوهش آب در کشاورزیجلد ۲۸، شماره ۲، صفحات ۳۸۵-۳۹۴
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023