| 播期对豫麦49-198群体质量和产量性状的影响 |
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| 引用本文： | 刘万代,杜沛鑫,尹钧,陈现勇.播期对豫麦49-198群体质量和产量性状的影响[J].江西农业学报,2009,21(5). |
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| 作者姓名： | 刘万代 杜沛鑫 尹钧 陈现勇 |
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| 作者单位： | 河南农业大学,国家小麦工程技术研究中心,河南,郑州,450002 |
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| 基金项目： | 国家科技支撑计划重大项目 |
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| 摘 要： | 为了给生产上大面积推广豫麦49-198提供适宜播期,以豫麦49-198为材料研究了不同播期对群体质量及产量的影响。结果表明,最高群体总茎数随播期推迟而下降,早播的最终成穗数较少;最大叶面积指数随播期推迟而降低,孕穗后早播的叶面积指数衰减快;就花后干物质积累而言,以适播的最多,晚播次之,早播最少。不同播期间籽粒产量呈现出适播>晚播>早播,且不同播期的产量差异达显著水平;适播的穗粒数与千粒重较其它播期的有所下降。在基本苗195万/hm2情况下,河南中部地区豫麦49-198的适宜播期是10月12日,此期播种有利于创建合理的群体结构、实现高产。
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| 关 键 词： | 冬小麦 豫麦49-198 播期 群体质量 产量 |
Effect of Sowing Date on Population Quality and Yield Characters of Winter Wheat Cultivar Yumai 49-198 |
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| LIU Wan-dai,DU Pei-xin,YIN Jun,CHEN Xian-yong.Effect of Sowing Date on Population Quality and Yield Characters of Winter Wheat Cultivar Yumai 49-198[J].Acta Agriculturae Jiangxi,2009,21(5). |
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| Authors: | LIU Wan-dai DU Pei-xin YIN Jun CHEN Xian-yong |
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| Institution: | National Engineering Research Center for Wheat;Henan Agricultural University;Zhengzhou 450002;China |
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| Abstract: | In order to provide suitable sowing date for the large-scale extension of winter wheat cultivar Yumai 49-198,the effects of different sowing dates on the population quality and yield characters of this cultivar were studied.The results indicated the highest stem number decreased along with the delay of sowing date.Of all sowing dates the final ear number of Yumai 49-198 sown earlier was less.The highest leaf area index decreased along with the delay of sowing date.The leaf area index of Yumai 49-198 sown ea... |
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| Keywords: | Winter wheat Sowing date Yumai 49-198 Population quality Yield character |
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