| 基于高光谱的膜下滴灌小麦氮素营养评价研究 |
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| 作者姓名： | Diao WY Li SK Wang KR Jin XL Wang FY Chen B Wang Q Wang K Xiao CH |
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| 作者单位： | 石河子大学,新疆兵团绿洲生态农业重点开放实验室;中国农业科学院作物科学研究所,农业部作物生理生态与栽培重点开放实验室;扬州大学农学院,农业部长江中下游作物生理生态与栽培重点开放实验室,江苏省作物遗传生理重点实验室;新疆农垦科学院棉花研究所 |
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| 基金项目： | 国家自然科学基金项目(30760109,31071371,41161068)资助 |
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| 摘 要： | 通过小麦氮素和品种对比试验,分析不同氮素和品种处理小麦生育期氮肥偏生产力与光谱参数的相关关系,建立小麦氮肥偏生产力的光谱参数估算模型,结果表明绿度植被指数(GREENNDVI)在拔节期与小麦氮肥偏生产力呈极显著相关,相关系数0.640 4。用GREENNDVI在拔节期建立小麦氮肥偏生产力的估算模型,均方根误差0.459 7。研究表明利用光谱参数可以有效地估算小麦氮肥偏生产力。
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| 关 键 词： | 小麦 氮素评价指标 氮肥偏生产力 光谱参量 |
Estimated nitrogen nutrition index based on the hyperspectral for wheat of drip irrigation under mulch |
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| Diao WY,Li SK,Wang KR,Jin XL,Wang FY,Chen B,Wang Q,Wang K,Xiao CH.Estimated nitrogen nutrition index based on the hyperspectral for wheat of drip irrigation under mulch[J].Spectroscopy and Spectral Analysis,2012,32(5):1362-1366. |
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| Authors: | Diao Wan-ying Li Shao-kun Wang Ke-ru Jin Xiu-liang Wang Fang-yong Chen Bing Wang Qiong Wang Kai Xiao Chun-hua |
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| Institution: | Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi University, Shihezi 832003, China. diaowanying@126.com |
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| Abstract: | The accurate wheat management needs a reasonable nitrogen application, and it is one of the key measures for real-time and quantitatively monitoring of nitrogen status to gain the higher yield of wheat. In the present study, two field experiments were conducted with different nitrogen stress and wheat cultivars, the relationship was analyzed between spectral parameters and the partial factor productivity from applied N (PFPn), and the estimating model was established for PFP, in the growth stages of wheat. The result indicated that there was a highly significant correlation between the PFP, and GreenNDVI at jointing, the correlation coefficient (r) was 0.6404, the estimating model of PFPn was established, and the root mean square errors (RMSE) was 0.4597. The result indicated that the PFPn can be effectively estimated by using spectral parameters. |
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| Keywords: | Wheat Nitrogen assessment index Partial factor productivity from applied N(PFPn) Spectral parameters |
| 本文献已被 CNKI PubMed 等数据库收录！ |
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