| 氮肥用量对饲用玉米光合特性以及产量的影响 |
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| 引用本文： | 于秋竹,孔宇,杨亮,赵宏伟.氮肥用量对饲用玉米光合特性以及产量的影响[J].东北农业大学学报,2008,39(12). |
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| 作者姓名： | 于秋竹 孔宇 杨亮 赵宏伟 |
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| 作者单位： | 东北农业大学农学院,哈尔滨,150030 |
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| 基金项目： | 东北农业大学博士后基金 |
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| 摘 要： | 以中原单32、龙辐208和高油115为材料,研究氮肥用量对饲用玉米光合特性以及产量的影响。结果表明,3个饲用玉米品种叶面积指数、叶绿素a含量、叶绿素b含量和叶绿素总含量在整个生育过程中均呈单峰曲线变化。叶面积指数以N300处理为最高,叶绿素含量以N250处理为最高。饲用玉米生物产量品种间表现为龙辐208>中原单32>高油115,均以N250处理为最高,各处理间生物产量差异均达到极显著水平。饲用玉米光合特性与生物产量呈显著正相关。
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| 关 键 词： | 饲用玉米 光合特性 产量 氮肥用量 |
Effect of nitrogen application on photosynthesis characteristics and yield of silage maize |
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| YU Qiuzhu,KONG Yu,YANG Liang,ZHAO Hongwei.Effect of nitrogen application on photosynthesis characteristics and yield of silage maize[J].Journal of Northeast Agricultural University,2008,39(12). |
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| Authors: | YU Qiuzhu KONG Yu YANG Liang ZHAO Hongwei |
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| Abstract: | The study is carried out to explore the effects of nitrogen application on photosynthetic characteristics and yield of silage maize with Zhongyuandan 32, Longfu 208 and Gaoyou 115. The results showed that leaf area index, chlorophyll a content, chlorophyll b content and total chlorophyll content of 3 breeds changed as a single peak. All tested varieties had the highest leaf area index at N300; N250 was the best treatment of chlorophyll content. The yield of silage maize was that Longfu 208>Zhongyuandan 32>Gaoyou 115. N250 was the best disposal to enhance the yield of silage maize. The yields of silage maize under different N application rate were extremely significantly different among treatments. Photosynthesis characteristics were significantly positively correlated with the yield of silage maize. |
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| Keywords: | silage maize physiological characteristics yield nitrogen application |
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