نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی آب، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران.
2 بخش تحقیقات خاک و آب، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کرمانشاه، سازمان تحقیقات، آموزش و ترویج کشاورزی، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study examined the effects of different levels of deficit irrigation on the performance and plant parameters of quinoa in the research greenhouse of the College of Agriculture and Natural Resources, Razi University, over two cropping years (2018 and 2019). The experiment was conducted using a randomized complete block design with five replications. The treatments included irrigation levels of 40%, 60%, 80%, and 100% (control) of the calculated water requirement based on Class A evaporation pan. The results showed that deficit irrigation had a significant effect (at a 1% probability level) on plant height, biological yield, thousand-seed weight, peduncle length, number of lateral branches, root dry weight, and harvest index. Additionally, the results indicated that as the deficit irrigation percentage increased, grain yield and biological yield decreased. For the irrigation levels of 100%, 80%, 60%, and 40%, the two-year average biological yields were 7445.5, 7316, 6410, and 5333 kg/ha, respectively, while the grain yields were 2068.14, 2026.56, 1987.47, and 1874.45 kg/ha, respectively. Moreover, water use efficiency based on biological yield for the mentioned irrigation levels was 0.55, 0.67, 0.88, and 1.23 kg/m³, respectively, and based on grain yield, it was 1.98, 2.43, 2.83, and 3.53 kg/m³, respectively. The overall results of this study suggest that applying deficit irrigation at 80% of the water requirement can achieve significant improvements in water use efficiency without noticeable reductions in grain and biological yields, making quinoa a suitable crop for cultivation in arid and semi-arid regions.
کلیدواژه‌ها [English]
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