نشریه علمی پژوهشی مهندسی آبیاری و آب ایران

نشریه علمی پژوهشی مهندسی آبیاری و آب ایران

بررسی عملکرد و اجزای عملکرد گیاه ذرت دانه‌ای (Zea mays) تحت تاثیر سطوح مختلف آبیاری بخشی ریشه و بیوچار

نوع مقاله : مقاله پژوهشی

نویسنده
گروه آبیاری و زهکشی، دانشکده فنی و مهندسی ، دانشگاه پیام نور تهران، ایران
10.22125/iwe.2024.437154.1789
چکیده
گیاه ذرت یکی از پرمحصول‌ترین غلات بعد از گندم و برنج، به حساب می‌آید. در میان نهاده‌های کشاورزی، آب و خاک به-عنوان مهم‌ترین عوامل تولید، حایز اهمیت اقتصادی ویژه‌ای هستند. در این راستا، مدیریت مصرف آب و بهبود وضعیت خاک از اولویت‌های کشاورزی می‌باشد. کم آبیاری یکی از راه‌های صرفه‌جویی و مدیریت مصرف آب می‌باشد. یکی از روش‌های کم‌آبیاری، آبیاری به روش آبیاری بخشی ریشه می باشد. و برای بهبود وضعیت خاک می‌توان از کودهای آلی از جمله بیوچار استفاده نمود. این تحقیق به‌منظور بررسی تاثیر تیمارهای مختلف کم‌آبیاری بخشی ریشه در دو سطح 65 و 55 درصد و مقایسه با آبیاری کامل و سطوح مختلف مصرف بیوچار (صفر، 6 و 12 تن در هکتار) بر عملکرد و اجزای عملکرد گیاه ذرت در دو فصل زراعی در مزرعه پژوهشی بنیاد شهید تهران انجام شد. مقادیر اجزای عملکرد، عملکرد دانه، شاخص برداشت، شاخص سطح برگ و زیست‌توده گیاه ذرت در زمان برداشت اندازه‌گیری شدند. نتایج نشان داد که تیمار 65 درصد نیاز آبی از نظر عملکرد دانه با تیمار آبیاری کامل تفاوت معنی‌داری نداشت. افزایش مصرف بیوچار منجر به افزایش میزان عملکرد دانه ذرت شده، به‌طوری‌که تیمار مصرف 12 تن در هکتار بیوچار دارای بیشترین عملکرد دانه بوده و تیمار عدم مصرف بیوچار دارای کمترین مقدار عملکرد دانه بوده است. مقدار وزن هزاردانه در تیمار مصرف 12 تن در هکتار بیوچار نسبت به تیمارهای بدون مصرف بیوچار و مصرف 6 تن در هکتار بیوچار به‌ترتیب 40 درصد و 10 درصد بیشتر بود.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Assessing the yield and yield components of maize (Zea mays) under different levels of partial root irrigation and biochar

نویسنده English

Maryam Dehghani Amadabadi
Department of Agriculture and Drainage, Faculty of technical and engineering, University of Payam Noor Tehran, Iran,
چکیده English

Maize is one of the most productive grains following wheat and rice. In this regard, The so-called low-irrigation is considered as a method to save and manage water consumption. One of the low-irrigation practices is an irrigation method under which only a part of the root is irrigated. improve the soil condition is the use of organic fertilizers, including biochar. research was aimed to investigate the effect of different partial root irrigation treatments at two levels of 65 and 55 percent and to compare them with full irrigation. It was also aimed to use and compare different levels of biochar applications (0, 6 and 12 tons per hectare) on yield and yield components of maize in two cropping seasons. The yield components, grain yield and biomass of maize plants were measured after harvesting. The harvest index as well as the leaf area index was also calculated. The obtained results indicated that the treatment of 65 percent water demand was not significantly different from the full irrigation treatment in terms of grain yield. The increased quantity of applied biochar was led to increasing the maize seeds, so that, the treatment using 12 tons of biochar per hectare has the highest seed yield . The treatment without biochar has the lowest seed yield . The weight of 1,000 seeds in the treatment using 12 tons per hectare of biochar was 40 percent and 10 percent higher than the treatments without biochar and the one with 6 tons per hectare of biochar, respectively.

کلیدواژه‌ها English

low irrigation
organic fertilizer
harvest index
leaf area index
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