بررسی اثرات تراکم بوته و تاریخ کاشت بر عملکرد کمی و کیفی خردل علوفه‌ای (Brassica Juncea) در شرایط شور و نرمال

فیزیولوژی محیطی گیاهی

دوره 18، شماره 71، مهر 1402، صفحه 138-155   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.30495/iper.2022.1947256.1755

نویسندگان

حسن امیری¹؛ حسین عجم نوروزی^{* 1}؛ محمد تقی فیض بخش²؛ محمد رضا داداشی¹

¹گروه کشاورزی. واحد گرگان. دانشگاه آزاد اسلامی، گرگان، ایران.

²بخش زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان گلستان، گرگان. ایران

چکیده

به‌منظور بررسی اثرات شوری خاک، تراکم بوته و تاریخ کاشت بر عملکرد کمی و کیفی علوفه خردل علوفه­ای (لاین S-83)، آزمایشی در سال زراعی 95-1394 در ایستگاه تحقیقات مزرعه نمونه گرگان به صورت اسپلیت اسپلیت پلات در قالب بلوک‌های کامل تصادفی در سه تکرار انجام شد. فاکتور اصلی شوری خاک (2 و 10 دسی­زیمنس بر متر)، فاکتور فرعی تاریخ کاشت (15 آبان، 30 آبان، 15 آذر، 30 آذر و 15دی) و فاکتور فرعی فرعی تراکم بوته در سه سطح (208000، 277000 و 416000) بوته در هکتار در نظر گرفته شد. نتایج نشان داد اثرات متقابل محیط × تاریخ کاشت بر کلیه صفات مورد بررسی شامل وزن تر، وزن خشک، درصد پروتئین برگ، درصد پروتئین ساقه، درصد پروتئین غلاف، درصد پروتئین کل، عملکرد پروتئین، درصد الیاف برگ، درصد الیاف ساقه، درصد الیاف غلاف، درصد الیاف کل، عملکرد الیاف و غلظت پرولین برگ معنی­دار بود. اثر متقابل محیط × تراکم کاشت نیز بر کلیه صفات مذکور به جز درصد پروتئین برگ و غلظت پرولین برگ معنی­دار گزارش شد. همچنین اثر متقابل تاریخ کاشت × تراکم کاشت نیز تنها بر درصد پروتئین ساقه و غلظت پرولین برگ معنی­دار نبود. به‌طورکلی می‌توان گفت کشت خردل علوفه­ای در تاریخ 15 آبان و تراکم 208 هزاربوته در هکتار موجب تولید بیشترین وزن تر و خشک علوفه و عملکرد پروتئین و همچنین کمترین میزان الیاف خواهد شد.

کلیدواژه‌ها

تراکم بوته؛ تاریخ کاشت؛ پروتئین؛ الیاف؛ پرولین

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