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首页> 外文期刊>International Journal of Biosciences >Study on effect of plant density variations at different growth stages of rapeseed on seed yield, oil yield, seed oil content
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Study on effect of plant density variations at different growth stages of rapeseed on seed yield, oil yield, seed oil content

机译：油菜不同生育期植物密度变化对种子产量，含油量，种子含油量的影响研究

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The effect of Study on effect of plant density variations at different growth stages of rapeseed on seed yield , oil yield, seed oil content was investigated in Natural Resources Nursery of Bam, Iran in 2010-2011 as a factorial study based on a Randomized Complete Block Design with three replications in which the first factor was devoted to the time of plants removal including seedling emergence, stemming and flowering and the second factor was devoted to the intensity of plants removal at three levels of 25, 50 and 75%. There was a control in each replication. The measured traits included seed yield, oilyield, seed oil content, Harvest index. It was found that rapeseed is more sensitive to the intensity of plants removal than to its stage. The effect of plants removal intensity was significant on seed yield per plant and oil yield per unit area at 5% probability level and on total yield per unit area at 1% probability level, so that the removal of 25 and 50% of plants was compensated by greater growth and single-plant yield (by 34.2%) and only the removal of 75% of plants decreased seed yield per unit area by 30.7 and 19.9% as compared to the removal of 25 and 50% of plants, respectively. The interactions between the time and intensity of plants removal was significant for oil yield and seed yield at 5% probability level. The lowest seed yield (2668 kgha-1) was obtained by the removal of the plants at flowering and stemming which differed with control by 26.34%. Other evaluated traits were not affected by the treatments. It can be recommended that the maximum seed yield can be realized in Bam, Iran by decreasing plant density by 15% (57 plantsm-2).
机译：基于随机完全区组的因子分析，于2010-2011年在伊朗巴姆的自然资源苗圃进行了研究，研究了油菜不同生长阶段植物密度变化对种子产量，含油量，种子含油量的影响。具有三个重复的设计，其中第一个因素专门用于去除植物的时间，包括幼苗出苗，茎生和开花，第二个因素专门用于植物去除的强度，分别为25％，50％和75％。每个复制中都有一个控件。测得的性状包括种子产量，油产量，种子油含量，收获指数。发现油菜籽对植物去除的强度比其阶段更敏感。移栽强度对概率为5％的单株种子产量和每单位面积的油产量以及概率为1％的单位面积的总产量有显着影响，因此补偿了25％和50％的植株的清除通过增加生长量和单株产量（降低34.2％），仅除去75％的植物，每单位面积的种子产量就分别降低了25.7％和50％，分别降低了30.7和19.9％。时间和植物去除强度之间的相互作用对于5％的概率水平下的油产量和种子产量具有重要意义。通过在开花和摘芽时除去植物获得最低的种子产量（2668 kgha-1），与对照相比差异为26.34％。其他评估的性状不受治疗的影响。可以建议通过将植物密度降低15％（57 plantm-2）在伊朗巴姆实现最大的种子产量。

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