نوع مقاله : علمی- پژوهشی
نویسندگان
1 عضو هیأت علمی مرکز تحقیقات منابع طبیعی و امور دام مازندران، ساری
2 کارشناس ارشد مجتمع چوب و کاغذ مارندران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In order to determine the most suitable mixture and spacing of maple and ash, three levels of planting space including1.5×1.5, 2×2 and 2.5×2.5 meters and five levels of species mixture including: 100% maple, 100% ash, 65% maple + 35% ash, 50% maple + 50% ash and 35% maple + 65% ash were applied. The statistical design was split Plots in Randomized Complete Blocks with three replicates. The site was allocated on north slope of Sari Forests at Mazandaran province with altitude about 400 m. above sea level. After termination of the first five year period of the trial, the results showed that: The effect of the combination and spacing treatments on saplings collar diameter and height was not significant, whereas their effect on saplings survival was significant. Although the effect of spacing on saplings quality was not significant, but the effect of combination was significant. The treatments interaction effect on the whole saplings. The quantitative and qualititative growth parameters was not significant. The greatest percentage of survival belonged to spacing of 2.5 * 2.5 meters (82%) and ash monoculture (98%). There was not significant difference between the other spacing and combination treatments. The highest and the lowest qualititative values belonged to ash and maple monoculture.
کلیدواژهها [English]
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