بررسی اثر سیستم نوین مدیریت کشت(SRI) بر عملکرد دانه و بهره وری آب در مزارع برنج

بوم شناسی گیاهان زراعی

مقاله 4، دوره 9، شماره 4 - شماره پیاپی 33، بهمن 1392، صفحه 53-61   

نوع مقاله: پژوهشی

نویسندگان

یاسر قربانیان آستانه^{* 1}؛ ابراهیم امیری²؛ تیمور رضوی پور³؛ مجتبی رضایی³

¹کارشناس ارشد آبیاری و زهکشی دانشگاه آزاد اسلامی واحد شوشتر،

²دانشیار دانشگاه آزاد اسلامی واحد لاهیجان، لاهیجان، ایران.

³عضو هیأت علمی مؤسسه تحقیقات برنج کشور، رشت، ایران.

چکیده

به منظور بررسی بهره­وری آب در سیستم­های مختلف کشت و مقایسه آن با سیستم نوین مدیریت کشت برنج، آزمایشی در سال زراعی 1390 در موسسه تحقیقات برنج کشور (رشت) انجام شد. تیمارها شامل: روش کشت سنتی، روش کشت بهبود یافته و سیستم­های مختلف کشت به روش سیستم نوین مدیریت کشت در قالب هشت تیمار مختلف کودی بودند. نتایج نشان داد که عملکرد دانه، بیوماس کل، شاخص برداشت، تعداد پنجه در متر مربع، بهره­وری مبتنی بر بیوماس و     بهره­وری آب در سیستم نوین مدیریت کشت بطور معنی­داری بیشتر از روش­های سنتی و بهبود یافته بود. از بین تیمارهای مختلف تیمار (کود بازیافت زباله شهری + 50% کود شیمیایی) همراه با کاهش 50 درصدی در مصرف کود شیمیایی بیشترین عملکرد دانه و بهره­وری آب را به ترتیب به مقدار 3122 کیلوگرم در هکتار و 56/1 متر مکعب بدست آوردکه به عنوان مدیریت مناسب پیشنهاد می­شود.

کلیدواژه‌ها

عملکرد دانه؛ بهره وری آب؛ بیوماس؛ شاخص برداشت

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