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| 1 | 基于光谱指数波段优化算法的小麦玉米冠层含氮量估测显示文摘作物关键生育时期冠层氮素含量的实时监测对于优化氮肥用量和减少环境风险具有重要的意义。为了寻求预测不同作物氮素含量的最佳光谱参数,实现作物氮素无损营养诊断。本研究通过2008年—2011年在德国慕尼黑弗莱辛和河北曲周的不同氮量的小麦玉米田间试验,采用高光谱仪获取小麦玉米冠层的反射光谱,利用光谱理论模型进行光谱指数波段的优化,从而抽取不同冠层结构条件下的小麦玉米氮素营养敏感波段。结果表明与传统的基于红光的光谱指数相比,优化光谱指数显著提高了小麦玉米冠层氮素含量的预测能力,克服了传统的基于红光光谱指数的饱和问题。优化光谱指数的波段结合随着作物品种及其冠层结构的变化而变化,其优化波段范围主要集中在红边(730~760nm)和红边向近红外的过渡区域(760~880nm)。优化结果显示玉米最佳光谱指数为R_(λ766)/R_(λ738)-1,小麦最佳光谱指数为R_(λ796)/R_(λ760)-1,玉米小麦相结合优化后的最佳光谱指数为R_(λ876)/R_(λ730)-1。结果进一步验证了优化光谱指数估测的不同作物含氮量的预测值与实测值相关性最高,且验证偏差最小,证实了优化后的光谱特征参数可对不同作物氮素丰缺状况进行快速、准确、无损估测。试验结果也为设计作物冠层氮素传感器和更好的利用现有基于卫星的传感器实施区域上的作物氮素营养监测提供了理论基础。 | 李丹 李斐 胡云才 Mistele Bodo Urs Schmidhalter | 2016 | 光谱学与光谱分析2016，36，4： | 11 |
| 2 | Assessing the vertical footprint of re?ectance measurements to characterize nitrogen uptake and biomass distribution in maize canopies显示文摘 | Winterhalter L Mistele B Schmidhalter U | 2012 | Field Crops Research2012，129，11： | 1 |
| 3 | Estimating the nitrogen nutrition index using spectral canopy reflectance measurements显示文摘 | Bodo Mistele Urs Schmidhalter | 2008 | European Journal of Agronomy2008，29，4： | 1 |
| 4 | Estimating the nitrogen nutrition index using spectral canopy reflectance measurements显示文摘 | Bodo Mistele Urs Schmidhalter | 2008 | European Journal of Agronomy2008，，4： | 1 |
| 5 | Estimating the nitrogen nutritional in-dex using spectral canopy reflectance measurements显示文摘 | MISTELE B SCHMIDHALTER U | 2008 | European Journalof Agronomy2008，29，： | 1 |
| 6 | The performance of active spectral reflectance sensors as influenced by measuring distance, device temperature and light intensity显示文摘 | Kipp S Mistele B Schmidhalter Urs | 2014 | Computers and Electronics in Agriculture2014，100，1： | 1 |
| 7 | The performance of active spectral reflectance sensors as influenced by measuring distance, device temperature and light intensity显示文摘 | Kipp Sebastian Mistele Bodo Schmidhalter Urs | 2014 | Computers and Electronics in Agriculture2014，100，1： | 1 |
| 8 | Remotely estimating aerial N status of phenologically differing winter wheat cultivars grown in contrasting climatic and geographic zones in China and Germany显示文摘 | Fei Li Bodo Mistele Yuncai Hu Xianlu Yue Shanchao Yue Yuxin Miao Xinping Chen Zhenling Cui Qingfeng Meng Urs Schmidhalter | 2012 | Field Crops Research2012，，： | 1 |
| 9 | Spectral measurements of the total aerial N and biomass dry weight in maize using a quadrilateral-view optic显示文摘 | Mistele B Urs Schmidhalter | 2008 | Field Crops Research2008，106，1： | 1 |
| 10 | Synthesis of Poly(2,6-dimethylphenyleneoxide) in Carbon Dioxide显示文摘 | Mistele C D DeSimone J M | 1996 | Macromolecules1996，29，： | 1 |
| 11 | High-throughput phenotyping early plant vigour of winter wheat 显示文摘 | Kipp S Mistele B Baresel P | 2014 | European Journal of Agronomy2014，52，： | 1 |
| 12 | Evaluation of active and passive sensor systems in the field to phenotype maize hybrids with high-throughput 显示文摘 | Winterhalter L Mistele B Schmidhalter U | 2013 | Field Crops Research2013，154，： | 1 |
| 13 | Smooth GaN Surfaces by Photoinduced Electro-chemical Etching 显示文摘 | Rotter T Aderhold J Mistele D | 1999 | Materials Science and Engineering B1999，59，： | 1 |
| 14 | Comparing hyperspec- tral index optimization algorithms to estimate aerial Nuptake using multi temporal winter wheat datasets from contrasting climatic and geographic zones in Chi- na and Germany显示文摘 | LI F MISTELE B HU Y | 2013 | Agricultural and Forest Meteorol- ogy2013，180，8： | 1 |
| 15 | Investigation of Ni/Au-contacts on p-GaN annealed in different atmospheres显示文摘 | MISTELE D FEDLER F KLAUSING H | 2001 | J Crystal Growth2001，230，34： | 1 |
| 16 | Spectral high- throughput assessments of phenotypic differences in biomass and nitrogen partitioning during grain ?lling of wheat under high yielding Western European condition显示文摘 | Erdle K Mistele B Schmidhalter U | 2013 | Field Crops Research2013，141，1： | 1 |
| 17 | Release of chromatin protein HMGB1 by necrotic cells triggers inflammation显示文摘 | Scaffidi P Mistell T Bianchi ME | 2002 | Nature2002，418，6894： | 1 |
| 18 | High throughput phenotyping of canopy water mass and canopy temperature in well-watered and drought stressed tropical maize hyhrids in the vegetative stage显示文摘 | Winterhalter L Mistele B Jampatong S | 2011 | European Journal of Agronomy2011，35，： | 1 |
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