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| 氮肥用量与施用时期及分配比例对夏玉米干物质积累的影响 | |
| 引用本文： | 丁民伟,崔彦宏,刘梦星,崔国美,杨利.氮肥用量与施用时期及分配比例对夏玉米干物质积累的影响[J].河北农业大学学报,2007,30(6):1-4. |
| 作者姓名： | 丁民伟 崔彦宏 刘梦星 崔国美 杨利 |
| 作者单位： | 1. 河北农业大学农学院,河北保定071001;石家庄市农业科学研究院,河北石家庄050041 2. 河北农业大学农学院,河北保定,071001 3. 行唐县农牧局,河北行唐,050600 |
| 基金项目： | “国家粮食丰产科技工程”课题(2006BAD02A08) |
| 摘 要： | 为合理有效施用氮肥提供依据,以郑单958为试验材料,研究了氮肥用量与施用时期及分配比例对夏玉米干物质积累与分配的影响。研究结果表明:施氮量为10 kg/667 m2时,在苗期施肥比大喇叭口期施肥能获得更大的干物质积累量;大喇叭口期和吐丝期施氮肥有利于玉米生育后期干物质积累;施氮量为20 kg/667 m2,施用时期及分配比例为苗肥30%+大喇叭口肥60%+花粒肥10%的处理,群体干物质积累量和籽粒的干物质积累量最大,最大增长速率、平均增长速率都较高。 |
| 关 键 词： | 夏玉米 氮素 施氮量 施氮时期 分配比例 干物质 |
| 文章编号： | 1000-1573(2007)06-0001-04 |
| 修稿时间： | 2006年6月8日 |
Effect of N application rate, time and ratio on dry matter accumulation of summer maize (Zea mays L.) |
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| DING Min-wei,CUI Yan-hong,LIU Meng-xing,CUI Guo-mei,YANG Li.Effect of N application rate, time and ratio on dry matter accumulation of summer maize (Zea mays L.)[J].Journal of Agricultural University of Hebei,2007,30(6):1-4. | |
| Authors: | DING Min-wei CUI Yan-hong LIU Meng-xing CUI Guo-mei YANG Li |
| Abstract: | A field experiment with summer maize hybrid Zhengdan 958 was conducted to analyze the effect of nitrogen application rate,time and ratio on dry matter accumulation of summer maize plants.Results showed the total biomass was higher when nitrogen was applied in seedling stage than applied at twelve-leaf stage with nitrogen amount of 10 kg/667 m2.With the nitrogen amount of 20 kg/667 m2,total biomass production was almost the highest when applied two times at both twelve-leaf stage and silking stage.With the nitrogen amount of 20 kg/667 m2,total biomass production was the highest when applied three times at seedling stage(30%),twelve-leaf stage(60%) and silking stage(10%). |
| Keywords: | summer maize nitrogen rate applying time ratio dry matter accumulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |