نوع مقاله : علمی پژوهشی
نویسندگان
1 مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان( شاهرود) - ایستگاه تحقیقات پسته دامغان
2 1- بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان)شاهرود(، سازمان تحقیقات، آموزش و ترویج کشاورزی،
3 2- پژوهشکده پسته، موسسه تحقیقات علوم باغبانی، سازمان تحقیقات و آموزش و ترویج کشاورزی، رفسنجان، ایران.
4 دانش آموخته دکتری علوم و مهندسی صنایع غذایی، دانشگاه آزاد اسلامی واحد دامغان
5 بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان)شاهرود(، سازمان تحقیقات، آموزش و ترویج کشاورزی،
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The calculation of the distribution of various non-reactive chemical substances in irrigation water and the selection of an appropriate application method for each are critical factors in ensuring the successful operation and optimal performance of irrigation systems. At present, the characteristics of injection systems, the types of chemicals applied, application rates, distribution uniformity, and monitoring of fertigation processes are among the most important considerations in agricultural production management.The increasing cost of supplying micronutrients and fertilizer chelates required to achieve desirable quantitative and qualitative yields in field crops, orchards, and greenhouse production systems, together with the rising value of energy resources and the expansion of modern irrigation methods, has further highlighted the importance of fertigation practices. Evaluating the hardware components and application procedures of auxiliary systems used for injecting water-soluble fertilizers and micronutrients is therefore a key aspect of the overall performance assessment of irrigation systems.In the present study, different fertigation methods used in irrigation systems installed in pistachio orchards of Damghan County, Iran, were evaluated. The results indicated a clear expansion of active injection systems (utilizing injection pumps) compared with passive injection systems. Furthermore, the application of fertilizers, micronutrients, and soil amendments through drip irrigation systems showed a generally favorable trend. The findings revealed that the fertilizers used in the surveyed fertigation projects were appropriately selected. However, management-related challenges were observed, mainly arising from nutrient losses caused by improper placement of fertilizers outside the effective root zone and from non-uniform nutrient distribution due to inaccurate estimation of injection rates within irrigation systems. Based on the obtained results, the application of passive fertilizer injection systems (pressurized tank injectors) is not recommended because of their suboptimal performance and limited efficiency.
کلیدواژهها [English]
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