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首页> 外文期刊>Range Management & Agroforestry >Response of barley to nitrogen management at varying growth stages under semi-arid conditions of Rajasthan.
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Response of barley to nitrogen management at varying growth stages under semi-arid conditions of Rajasthan.

机译：在拉贾斯坦邦半干旱条件下，大麦对不同生长阶段氮素管理的反应。

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摘要

A field experiment was conducted during winter (rabi) seasons of 2005-06 and 2006-07 at Avikanagar (Rajasthan) on malt variety of barley cv. RD 2618 to find out the economic rate and optimal time of nitrogen application for better quality and higher yield of irrigated barley (Hordeum vulgare L.). Application of 90 kg N/ha gave the highest grain (38.35 q/ha), straw (50.44 q/ha) yield and crude protein content in grain and straw (13.21 and 7.26%). The efficiency of N application was also higher when it was applied in 3 equal splits, i.e. at sowing, crown root initiation (CRI) and first node (FN) stage with respect to grain and straw yields. Results of pooled data showed that application of nitrogen in 3 equal splits gave 1.15 and 3.16 q/ha higher grain yield and 1.91 and 4.96 q/ha straw yield over other split combinations (1/2 at sowing and 1/2 at CRI stage and 1/2 each at sowing and FN stage). Application of 90 kg N/ha in three equal splits each at sowing, CRI and first node stage was found better in obtaining higher gross return (Rs. 33570/ha), net return (Rs. 19307/ha) and benefit:cost ratio (2.35) as compared to other modes of split application.
机译：在2005-06和2006-07的冬季（ rabi ）季节在Avikanagar（拉贾斯坦邦）对大麦 cv。 RD 2618的麦芽品种进行了田间试验，以找出答案灌溉大麦更好的质量和更高的产量时，氮肥的经济利用率和最佳施氮时间。施用90 kg N / ha可获得最高谷物（38.35 q / ha），秸秆（50.44 q / ha）产量和谷物和秸秆中的粗蛋白含量（13.21和7.26％）。相对于谷物和稻草产量，在播种，冠根起始（CRI）和第一节（FN）阶段等3个等分施用时，施氮效率也更高。汇总数据的结果表明，与其他分割组合（播种时为1/2，CRI阶段为1/2，在播种时分别为1/2和1/2）相比，在3个等比例分割的土壤中施用氮肥可使谷物产量提高1.15和3.16 q / ha，秸秆产量分别提高1.91和4.96 q / ha。在播种和FN阶段各占1/2。在播种，CRI和第一节阶段，将90 kg N / ha分成三个等份，发现更好地获得更高的总收益（Rs。33570 / ha），净收益（Rs。19307 / ha）和效益：成本比（2.35）与其他拆分应用模式相比。

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