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首页> 外文期刊>E3S Web of Conferences >Precision nitrogen management in drip irrigated maize ( Zea mays L.)
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Precision nitrogen management in drip irrigated maize ( Zea mays L.)

机译：滴灌玉米的精确氮管理（ Zea mays L.）

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The field experiment was conducted during kharif 2014 and 2015 at ZARS, V. C. Farm, Mandya to study the effect of precision nitrogen management on growth, yield and economics of drip irrigated maize. There were 9 treatments replicated thrice in Randomized Complete Block Design. Among the various treatments, drip fertigation of nitrogen through Soil Plant Analysis Development (SPAD) meter sufficiency index of 95-100 per cent under paired row (30/90) recorded significantly higher growth and yield parameters viz ., plant height, LAI, total dry matter production, cob length, number of rows per cob, number of kernels per cob and cob weight along with kernel (85.73 and 86.78 q/ha) and stover yield (140.4 and 145.3 q/ha) during both the years of experimentation as compared to UAS Bangalore package with surface irrigation and normal spacing of 60 cm X 30 cm and was being on par with nitrogen management through Leaf Colour Chart (LCC) 6, SPAD sufficiency index of 90-95 per cent and LCC 5. The SPAD sufficiency index of 95-100 per cent registered higher net returns (Rs. 69,634 and Rs. 77,614, respectively) and B:C ratio (2.82 and 3.00, respectively) followed by LCC 6.
机译：田间试验于2014年和2015年的Kharif在曼迪亚的V.C. Farm的ZARS进行，研究了精确氮管理对滴灌玉米生长，产量和经济性的影响。在随机完全区组设计中，有9种治疗方法重复了三次。在各种处理中，通过成对排（30/90）下通过土壤植物分析发展（SPAD）仪供气指数为95-100％的氮滴灌施肥，可显着提高作物的生长和产量参数，即株高，LAI，总和在这两年的试验年中，干物质产量，穗轴长度，每根穗轴的行数，每根穗轴的粒数和穗轴重量以及籽粒（85.73和86.78 q / ha）和秸秆产量（140.4和145.3 q / ha）与与采用地面灌溉和60 cm X 30 cm正常间距的UAS Bangalore软件包相比，通过叶色图（LCC）6，SPAD充足指数为90-95％和LCC 5与氮素管理相提并论。SPAD充足指数95-100％的净收益较高（分别为69,634卢比和77,614卢比）和B：C比率（分别为2.82和3.00），其次是LCC 6。

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