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首页> 外文期刊>Cogent Food & Agriculture >Agronomic efficiency of N of common bean (Phaseolus vulgaris L.) in some representative soils of Eastern Ethiopia
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Agronomic efficiency of N of common bean (Phaseolus vulgaris L.) in some representative soils of Eastern Ethiopia

机译：埃塞俄比亚东部一些代表性土壤中普通豆（菜豆）的氮素农学效率

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Nitrogen is the major plant nutrient that limits common bean production throughout sub-Saharan Africa. Four experimental trials were conducted at four areas namely Babillae, Fedis, Haramaya, and Hirna experimental sites to determine if various inherent soil fertility status and soil total N might affect the N use efficiency of common bean var. Dursitu. Six levels of N application and two inoculation treatments were factorially combined and laid out in randomized complete block design with three replications. The agronomic efficiency of N (AE-N) by common bean obtained from different locations displayed significant difference at p ?≤?0.05. The highest AE-N was obtained from Babillae site, while the lowest from Hirna site. In general, overall AE-N declined with increase in rates of N application. Slight increase of AE-N was observed in Babillae and Hirna sites when 20?kg?N?ha~(?1) was applied. Haramaya and Hirna sites had the highest of all investigated growth parameters, except 100 seeds weight and harvest index. The regression analysis indicated strong and negative association (R ~(2)?=?0.498 and R ~(2)?=?0.390 at p ?≤?0.05) between AE-N and N rates of application in Babillae site followed by Fedis site, respectively. A stronger and significant association (R ~(2)?=?0.276, p ?≤?0.05) of AE-N and grain yield was observed only in Hirna site. In general, this study indicated the remarkable effect of soil inherent fertility and soil total N content on N use efficiency of common bean in the study sites.
机译：氮是限制整个撒哈拉以南非洲普通豆产量的主要植物营养素。在Babillae，Fedis，Haramaya和Hirna等四个试验地区进行了四个试验，以确定各种固有的土壤肥力状况和土壤总氮是否会影响普通豆品种的氮素利用效率。杜尔斯特。将六个水平的氮肥施用量和两种接种处理进行因子组合，并以随机重复的完全区组设计进行布局，重复三遍。从不同位置获得的普通豆的N（AE-N）的农学效率在p≤0.05时显示出显着差异。最高的AE-N从Babillae站点获得，而最低的从Hirna站点获得。通常，随着氮肥施用量的增加，总的AE-N下降。当使用20？kg？N？ha〜（？1）时，在Babillae和Hirna站点观察到AE-N略有增加。 Haramaya和Hirna站点在所有调查的生长参数中最高，除了100颗种子的重量和收获指数。回归分析表明AE-N和N之间存在强负相关关系（ R〜（2）？=？0.498和 R〜（2）？=？0.390在 p？≤？0.05时）分别在Babillae网站和其后的Fedis网站上的使用率。仅在Hirna位点观察到了AE-N与籽粒产量的更强且显着的关联（i R〜（2）α＝≤0.276，p ＜≤0.05）。总的来说，这项研究表明土壤固有的肥力和土壤总氮含量对研究地点普通豆的氮利用效率具有显着影响。

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