برآورد اثر کشت مخلوط بر تولید علوفه و شاخص کارآئی ماشک (Vicia narbonensis L.) و جو (Hordeum vulgare L.) در شرایط تداخل علف‌های هرز

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه لرستان

چکیده

آزمایش مزرعه ای به‌منظور بررسی اثر کشت مخلوط و علف‌های هرز، در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه لرستان در دو سال زراعی (95-1394 و 94-1393) با دو گیاه لگوم و غله (ماشک برگ درشت و جو رقم آبیدر) در قالب سیستم مخلوط افزایشی (Additive Series Intercropping) بصورت فاکتوریل 5×4 در قالب طرح بلوک‌های کامل تصادفی با سه تکرار و در یک مکان بصورت دیم اجراء شد، تیمارها شامل چهار سطح علف هرز (وجین کامل، یکبار وجین، دو بار وجین و عدم وجین) و سطوح مختلف اجزای مکمل مخلوط در 5 سطح، 40:100 (جو:ماشک)، 70:100، 100:100، 0:100 (کشت خالص جو) و 100:0 (کشت خالص ماشک)، بود. در همه برهمکنش‌ها با افزایش تعداد دفعات وجین (کنترل علف های هرز) این عملکرد بیشتر شد.کمترین تعداد علف هرز (در متر مربع) از سال اول و دوم با مخلوط 70:100 (جو:ماشک برگ درشت) معادل 21 و 35/21 بدست آمد، کشت خالص جو بیشترین وزن علف‌های هرز و کمترین کنترل را به عهده داشت (54/34 گرم/متر مربع)، از طرفی سطوح مخلوط، ترکیب 40:100 و 70:100 بیشترین کاهش وزن خشک کل علف‌های هرز را به خود اختصاص دادند (56/24 و 77/23 گرم در متر مربع). بنابراین، در سطوح مذکور (متعادل کشت مخلوط) راندمان کنترل علف‌های هرز در سال دوم بیش از سال اول بود. همچنین، با کاهش سهم ماشک از 100 به 70 و 40 درصد، بهره برداری از محیط نیز کاهش یافت و حداقل نسبت برابری زمین کل (LERt) در سال دوم و سطوح مختلف علف هرز به نسبت بذری 40:100 تعلق داشت.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Estimation of the effect of intercropping on hay production and efficiency indices of vetch (Vicia narbonensis L.) and barley (Hordeum velgare L.) in weeds interference

نویسندگان [English]

  • Khosro Azizi
  • Ali Reza Daraeimofrad
  • Behrouz Nasiri
  • Mohammad Feizian
Lorestan University
چکیده [English]

The field experiment to study the effects of intercropping on weed control, in the Agricultural Research Station of Lorestan University of 2014-15 and 2015-16 in 4×5 factorial randomized complete block design with three replications, in two consecutive years in one place was carried out on dry land. In this experiment, two plants (legume and cereal or broad leaf vetch and barley cultivar Abidar) in the form of additive series intercropping system with four levels of weed (weeding, once weeding, double weeding and non-weeding) and complementary components of intercropping in five levelsThe lowest number of weeds (in square meters) of first and second year with a mixture of 100: 70 (barley:vetch) was equivalent to 21 and 21.35, sole cropping of barley was the lowest greatest weight weed control (34.54 g/m²). the levels mix, combination of 100: 40 and 100: 70 most of the weeds dry weight, respectively (24.56 and 23.77 gr/m2). So, at the mentioned levels (intercropping balanced) efficiency of weed control in the second year was than the first year. Also, by reducing the share of vetch from 100 to 70 and 40 percent, the exploitation of the environment reduced and minimum LERt in the second year and different levels of weed was belonged to 40:100 seed ratio.

کلیدواژه‌ها [English]

  • Additive Series Intercropping
  • Sole Intercropping
  • biological control
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