investigation on growth characteristics of 24 different poplar clones in nursery stages
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Investigation of Different Stages of Aluminum Fluoride Crystal Growth
Crystallization of Aluminum fluoride at atmospheric pressure has been considered. Structure, size and shape of crystals formed during the crystallization process have been investigated. By applying the direct analysis method for the existed aluminum in solution, the aluminum fluoride nucleation process has been detected as a concentration valley at the outset of crystallization process. The...
متن کاملstudying the growth and morphological characteristics of euphrate poplar and white poplar hybrids in experimental nursery of khouzestan province
populus alba because of fast growing and relatively adapting to dry and semi-dry climate conditions and p.euphratica because of salt tolerating are important as native species. cuttings of 18 clones (p.alba x p.euphratica), a single reciprocal crossed clone (p. euphratica x alba) and 2 other p. alba clones were planted, surveyed under a rcbd with 3 replications each of which including 10 indivi...
متن کاملan investigation of accuracy and complexity across different proficiency levels in written narrative task
abstract this quasi-experimental study was aimed at examining the impact of storyline complexity on the grammatical accuracy and complexity of advanced and intermediate efl learners. a total of 65 advanced and intermediate efl learners were selected from iran language institute (ili). an intact group including 35 intermediate participants and another intact group with 30 advanced participants ...
an investigation on influencing factors on tourists shopping attitude of iranian handmade carpet in isfahan
چکیده ندارد.
15 صفحه اولA study on the incidence of woolly poplar aphid, Phloemyzus passerinii (Hom.: Aphididae) on poplar species and clones in Hamedan province, Iran
شته‌ی مومی صنوبر، Phloeomyzus passerinii (Signoret)، در ایران و بسیاری از کشورهای جهان از آفات مهم صنوبر به شمار می‌رود. طی سال‌های 1382-1381، مقاومت و حساسیت دوازده کلن صنوبر نسبت به شته‌ی P. passerinii در استان همدان مورد بررسی قرار گرفت. تعداد کلنی‌های شته‌ی تشکیل شده در واحد سطح شاخه در طول فصل رشد در سه نوبت اندازه‌گیری شد. کلن‌های Populus alba 58/57، P. deltoides 72/51، P. deltoides missi...
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عنوان ژورنال:
تحقیقات جنگل و صنوبر ایرانجلد ۱۱، شماره ۱، صفحات ۱۹۶-۱۳۳
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