مطالعه اثرات تاریخ کاشت و کاربرد ابر جاذب کلوفونی بر عملکرد و خصوصیات فنولوژیک ارقام گلرنگ در شرایط دیم سنندج
محورهای موضوعی : یافته های نوین کشاورزی
سمیرا محمدی
1
(دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد اراک)
حمید مدنی
2
(دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه آزاد اسلامی، واحد اراک)
اسعد رخزادی
3
(استادیار گروه زراعت، دانشکده کشاورزی، دانشگاه آزاد اسلامی، واحد سنندج)
کلید واژه: گلرنگ, کاشت انتظاری, کاشت بهاره, ابر جاذب,
چکیده مقاله :
این بررسی در سال زراعی 1391ـ1390 در شرایط دیم سنندج با آزمایشی به صورت کرت های دو بار خرد شده در قالب طرح بلوک های کامل تصادفی با 3 تکرار انجام شد. عامل اصلی شامل تاریخ کاشت و در دو سطح کشت انتظاری گلرنگ در تاریخ 15/9/90 (a1) و کشت بهاره در تاریخ 21/12/90 (a2) و عامل فرعی شامل کاربرد ابر جاذب کلوفونی در دو سطح عدم کاربرد (b1) و کاربرد (b2) و عامل فرعی فرعی شامل سه رقم سینا (c1)، فرامان (c2) و گلدشت (c3) بود. نتایج نشان داد تاریخ کاشت انتظاری از لحاظ تعداد طبق در بوته و عملکرد دانه نسبت به کاشت بهاره برتری معنی داری داشت. کاربرد ابر جاذب موجب افزایش معنی دار تعداد طبق در بوته نسبت به شاهد گردید.اثر رقم بر عملکرد دانه در واحد سطح معنی دار نبود ولی تعداد طبق در بوته، تعداد دانه در طبق و وزن هزار دانه تحت تأثیر عامل رقم قرار گرفتند و در میان ارقام مورد مطالعه رقم فرامان بالاترین عملکرد را به خود اختصاص داد همچنین اثر تاریخ کاشت بر مراحل نمو و ارتفاع بوته گلرنگ معنی دار بود به طوری که کاشت انتظاری موجب افزایش معنی دار طول مراحل نمو و ارتفاع بوته نسبت به کاشت بهاره گردید. کاربرد ابرجاذب در رقم سینا موجب افزایش معنی دار ارتفاع بوته نسبت به دو رقم دیگر گردید، همچنین رقم سینا در کاشت انتظاری بالاترین ارتفاع بوته را نسبت به دو رقم دیگر دارا بود. تفاوت ارقام از لحاظ رسیدگی در تاریخ کاشت بهاره معنی دار بود به طوری که رقم گلدشت در کاشت بهاره به عنوان دیر رس ترین رقم ثبت گردید. بر اساس نتایج به دست آمده در این آزمایش کاشت گلرنگ دیم به صورت انتظاری نسبت به کاشت بهاره برتری دارد و کاربرد مادهی ابر جاذب رطوبت در شرایط دیم قابل توصیه می باشد و رقم سینا نسبت به دو رقم دیگر عکس العمل رشدی بهتری به کاربرد ابرجاذب نشان داد.
In order to study the effectsof sowing date and super absorbent polymer application on yield and agronomictraits of safflower cultivars under rain fed conditions, an experiment wasconducted using a split-split plot layout in a randomized complete block designwith three replications in Sanandaj region. Two planting dates of delay (a1)and spring (a2) sowing were compared in main plots. Two treatmentsof non-application (b1) and application (b2) of superabsorbent polymer were assigned in subplots and three cultivars of Sina (c1),Faraman (c2) and Goldasht (c3) were applied as sub-subplots.Results showed that the phenology of safflower was significantly affected bysowing date. The longest developmental stages were recorded in delay sowingdate. Super absorbent application had no significant effect on crop phenology.Effect of sowing date on capitula number per plant, seed yield, biologicalyield and protein yield was significant. delay sowing date was superior tospring sowing date with regard to seed yield and crop productivity. Superabsorbent application significantly increased the number of capitula per plant,moreover in spring sowing date, application of super absorbent significantlyincreased biological yield as compared with non-application treatment. Thegreatest amount of seed yield among the studied genotypes was recorded by Faramancultivar at the rate of 601.2 kg/ha. According to the results of thisexperiment, delay sowing of safflower in rain fed conditions is morerecommended in comparison with spring sowing, and super absorbent applicationespecially in spring sowing date can resulted in improvement of crop growth andyield. In addition to, Faraman cultivar was superior to other two cultivarswith regard to productivity and yield under regional conditions of thisexperiment
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