| 减源对超高产夏玉米物质积累及氮素利用的影响 |
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| 引用本文： | 郝梦波,王空军,董树亭,张吉旺,李登海,刘鹏,杨今胜,柳京国.减源对超高产夏玉米物质积累及氮素利用的影响[J].山东农业科学,2009(8):34-36. |
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| 作者姓名： | 郝梦波 王空军 董树亭 张吉旺 李登海 刘鹏 杨今胜 柳京国 |
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| 作者单位： | 1. 作物生物学国家重点实验室/山东农业大学农学院,山东,泰安,271018
2. 山东登海种业股份有限公司,山东,莱州,261448 |
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| 基金项目： | 国家科技支撑计划项目(2007BAD31B04,2006BAD02A09-JS02);;公益性行业科研专项(200803030);;国家自然科学基金项目(30871476)资助 |
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| 摘 要： | 通过不同减源处理，研究了在超高产条件下减源对夏玉米物质积累和氮素利用的影响。结果表明：在超高产条件下剪叶1／4和1／2后地上部生物量和籽粒产量未出现显著性下降；减源后玉米植株对氮素的积累量增加；超高产条件下剪叶1／4和1／2都可以提高氮素收获指数，且随剪叶程度加大，氮素收获指数呈现升高的趋势。选育高产条件下叶面积相对小的高产夏玉米品种，是解决高产条件下氮素利用率低的有效途径。
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| 关 键 词： | 减源 夏玉米 物质积累 氮素利用 |
Effects of Leaf-cutting on Matter Accumulation and Nitrogen Utilization of Super-high-yielding Summer Maize |
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| HAO Meng-bo,WANG Kong-jun,DONG Shu-ting,ZHANG Ji-wang,LI Deng-hai,LIU Peng,YANG Jin-sheng,LIU Jing-guo.Effects of Leaf-cutting on Matter Accumulation and Nitrogen Utilization of Super-high-yielding Summer Maize[J].Shandong Agricultural Sciences,2009(8):34-36. |
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| Authors: | HAO Meng-bo WANG Kong-jun DONG Shu-ting ZHANG Ji-wang LI Deng-hai LIU Peng YANG Jin-sheng LIU Jing-guo |
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| Institution: | 1.State Key Laboratory of Crop Biology/ Agronomy College;Shandong Agricultural University;Taian 271018;China;2.Shandong Denghai Seed Co.Ltd.;Laizhou 261448;China |
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| Abstract: | The effects of different leaf-cutting treatments on the matter accumulation and nitrogen utilization of the super-high-yielding summer maize were studied.The results showed that under the condition of super high yield,the above-ground biomass and the grain yield did not reduce significantly after cutting 1/4 and 1/2 of the leaf.The nitrogen accumulation of maize plants increased after leaf-cutting.The treatments of cutting 1/4 or 1/2 leaf could improve the nitrogen harvest index;with the increase of leaf cu... |
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| Keywords: | Leaf-cutting Summer maize Matter accumulation Nitrogen utilization |
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