| 两个氮水平下不同玉米基因型产量与根拔拉力的关系 |
| |
| 引用本文： | 刘志刚,陈范骏.两个氮水平下不同玉米基因型产量与根拔拉力的关系[J].玉米科学,2013,21(6):107-110. |
| |
| 作者姓名： | 刘志刚 陈范骏 |
| |
| 作者单位： | 沈阳农业大学农学院, 沈阳 110866;中国农业大学资源与环境学院/教育部植物－土壤相互作用重点实验室, 北京 100193;中国农业大学资源与环境学院/教育部植物－土壤相互作用重点实验室, 北京 100193 |
| |
| 基金项目： | 公益性行业科研专项（200803030） |
| |
| 摘 要： | 以华北地区主栽的8个玉米杂交种和中国农业大学自育的2个杂交组合为试验材料，在不同供氮水平（0、240 kg/hm2）下对玉米子粒产量及其构成因素和根拔拉力进行研究。结果表明，百粒重在不同氮处理间差异显著，平均产量、穗粒数及根拔拉力差异极显著，穗长、穗粗及穗行数没有显著差异。不同玉米基因型产量下降的主要原因是穗粒数的降低。低氮处理下根拔拉力显著降低，其降低幅度与产量的减产幅度显著相关，可作为氮高效品种筛选的指标之一。
|
| 关 键 词： | 玉米 氮肥 产量 根拔拉力 |
| 收稿时间： | 2013/1/24 0:00:00 |
Relationship Between Yield and Root-pulling Resistance in Response to Nitrogen Supply in Different Maize Genotypes |
| |
| LIU Zhi-gang and CHEN Fan-jun.Relationship Between Yield and Root-pulling Resistance in Response to Nitrogen Supply in Different Maize Genotypes[J].Journal of Maize Sciences,2013,21(6):107-110. |
| |
| Authors: | LIU Zhi-gang and CHEN Fan-jun |
| |
| Institution: | College of Agriculture, Shenyang Agricultural University, Shenyang 110866;College of Resources and Environmental Science, China Agricultural University/Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China;College of Resources and Environmental Science, China Agricultural University/Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China |
| |
| Abstract: | The relationship between yield and root-pulling resistance were investigated at two nitrogen levels(0 and 240 kg/ha) by using 8 commercial maize hybrids and 2 unreleased hybrids. The results showed that there were significant decreases for both vertical root-pulling resistance and yield under lower nitrogen supply. Yield decrease was mainly resulted from the reduction of kernel number. Furthermore, a significant positive correlation for the falling range between vertical root-pulling resistance and yield was further observed, which might be used as one of the indicators for screening nitrogen efficient varieties. |
| |
| Keywords: | Maize Nitrogen Yield Root-pulling resistance |
|
| 点击此处可从《玉米科学》浏览原始摘要信息 |
| 点击此处可从《玉米科学》下载免费的PDF全文 |
