بررسی جذب و کارایی مصرف نور در کشت مخلوط لوبیا (Phaseolus vulgaris L.) و ریحان رویشی (Ocimum basilicum L.)

نوع مقاله : علمی - پژوهشی

نویسندگان

گروه زراعت، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران

چکیده

به منظور بررسی جذب و کارایی مصرف نور در کشت مخلوط لوبیا (Phaseolus vulgaris L.) و ریحان رویشی (Ocimum basilicum L.)، آزمایشی در سال زراعی87- 1386 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه فردوسی مشهد، در قالب طرح بلوک های کامل تصادفی با سه تکرار و پنج تیمار به اجرا در آمد. تیمارهای آزمایش عبارت بودند از: (1- کشت خالص لوبیا، 2- کشت خالص ریحان، 3- کشت مخلوط نواری چهار ردیف ریحان و دو ردیف لوبیا ، 4- کشت مخلوط نواری چهار ردیف لوبیا و دو ردیف ریحان و 5 – کشت مخلوط ردیفی). برداشت گیاه ریحان در دو چین انجام گرفت. در این آزمایش میزان جذب نور در تیمارهای کشت مخلوط به طور معنی داری بالاتر از کشت خالص بود. کارایی مصرف نور لوبیا در کشت ردیفی (4/2 گرم بر مگاژول) بالاتر از تیمارهای دیگر بود و کمترین کارایی نور لوبیا درتیمار 4ردیف ریحان و 2ردیف لوبیا با 6/1 گرم بر مگاژول به دست آمد. در برداشت اول گیاه ریحان، کشت خالص کارایی نور بالاتری نسبت به تیمارهای دیگر داشت (27/1 گرم بر مگاژول). به طور کلی در چین دوم کارایی مصرف نور در تمامی تیمارها بالاتر از چین اول بود و کشت ردیفی با 4/3 گرم بر مگاژول بالاترین کارایی مصرف نور را به خود اختصاص داد. ضریب استهلاک نوری در این آزمایش برای ریحان 47/0 و برای لوبیا 55/0 به دست آمد. بالاترین شاخص سطح برگ لوبیا (3/4) در کشت خالص حاصل شد. بالاترین شاخص سطح برگ ریحان (2/3) در برداشت اول در کشت نواری با 4 ردیف ریحان و در چین دوم در کشت خالص (5/2) بدست آمد.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of radiation use efficiency of intercropping of bean (Phaseolus vulgaris L.) and herb sweet basil (Ocimum basilicum L.)

نویسندگان [English]

  • Yaser Alizadeh
  • Alireza Koocheki
  • Mehdi Nassiri Mahallati
Department of Agronomy, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
چکیده [English]

In order to study radiation use efficiency and radiation interception in intercropping of herb sweet basil and common bean, an experiment was conducted at the Agricultural Research Station, Ferdowsi University of Mashhad, Iran for the growing season of 2008. Treatments were 1) sole crop of bean , 2) sole crop of sweet basil, 3) strip intercropping of bean and sweet basil (four rows bean and two rows sweet basil), 4) strip intercropping of bean and sweet basil (two rows sweet basil and four rows bean), 5) row intercropping of bean and sweet basil. Sweet basil was harvested at two times during the course of experiment. For this purpose a complete randomized block design with three replications was used. Results showed that in intercrop the fraction of intercepted radiation (F) was higher than the sole crop F. radiation use efficiency (RUE) of sweet basil in intercrop treatments was increased compared to sole crop and highest RUE of sweet basil obtained in secondary harvest of row intercropping (3.4g/Mj), and the highest RUE of bean obtained in row intercrop too (2.4g/Mj). Light extinction coefficient of bean was obtained as 0.55 and sweet basil 0.47 respectively. The highest Leaf area index (LAI) in bean was obtained in sole crop (4.3) and the highest LAI in sweet basil in first harvest was in strip intercropping with 4 rows sweet basil (3.2) and secondary harvest was in sole crop sweet basil (2.5).

کلیدواژه‌ها [English]

  • Leaf Area Index
  • Light extinction coefficient
  • Row intercropping
  • Strip intercropping
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