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اثر کودهای آلی و شیمیایی در مراحل مختلف فنولوژیک بر برخی خصوصیات کمی و کیفی سورگوم علوفهای اسپیدفید (Sorghum bicolor L. Var. Speed Feed) | ||
دانش کشاورزی وتولید پایدار | ||
مقاله 3، دوره 29، شماره 3، مهر 1398، صفحه 27-38 اصل مقاله (689.7 K) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
رویا کریمی؛ رضا امیرنیا* | ||
گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه ارومیه | ||
چکیده | ||
با در نظر گرفتن اهمیت استفاده از کودهای آلی در کشاورزی پایدار، آزمایشی بهصورت فاکتوریل در قالب طرح بلوکهای کامل تصادفی، در مزرعه ایستگاه تحقیقات کشاورزی و منابع طبیعی خوی، طی سال زراعی 95-1394 اجرا گردید. فاکتور اول شامل زمان محلولپاشی در سه مرحله شش برگی، ساقهدهی و پیش از گلدهی سورگوم و فاکتور دوم شامل محلولپاشی جلبک (عصاره جلبک دریایی40% ، نیتروژن 8%، پتاسیم 22%، فسفر 18%، آمینو اسید، آلجینیک و سیتوکینین، 5 در هزار)، 101-) HBمحرک رشد، 1 در هزار)، ماکروNPK) 20-20-20، 2 در هزار)، آب و شاهد بود. با اعمال محلولپاشی در هر سه مرحله، میزان فیبر خام، فیبر محلول در شوینده اسیدی و خنثی کاهش یافت و در مقابل قابلیت هضم علوفه افزایش نشان داد. محلولپاشی با جلبک و 101-HB در مرحله ساقهدهی در مقایسه با محلولپاشی با آب و شاهد در هر سه مرحله سبب افزایش 14% قابلیت هضم و 105% قند محلول گردیدند. محلولپاشی جلبک دریایی در مرحله ساقهدهی، بیشترین میزان پروتئین خام (48/16) را به خود اختصاص داد. محلولپاشی کودهای مایع در مرحله شش برگی و ساقهدهی با افزایش 34% نسبت به محلولپاشی با آب و شاهد در هر سه مرحله، بیشترین شاخص سطح برگ را داشتند. محلولپاشی جلبک و 101-HB در مرحله ساقهدهی بهترتیب با افزایش 54 و 46 درصدی عملکرد، بالاترین گروه آماری بودند . بهرهگیری از کودهای آلی علاوه بر بهبود کیفیت و سودآوری برای کشاورز، قدمی مهم در جهت پیشبرد کشاورزی پایدار بوده و قابل توصیه میباشد. | ||
کلیدواژهها | ||
قابلیت هضم؛ کود آلی؛ کود شیمیایی؛ کیفیت علوفه؛ محلولپاشی | ||
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