| 利用水稻光谱分析估测钾素含量的研究初报 |
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| 引用本文： | 王珂,沈掌泉,王人潮.利用水稻光谱分析估测钾素含量的研究初报[J].浙江大学学报(农业与生命科学版),1993(Z1). |
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| 作者姓名： | 王珂 沈掌泉 王人潮 |
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| 作者单位： | 浙江农业大学遥感与信息技术应用研究所，浙江农业大学遥感与信息技术应用研究所，浙江农业大学遥感与信息技术应用研究所 杭州 310029，杭州 310029，杭州 310029 |
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| 基金项目： | 浙江省“八五”科技攻关项目 |
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| 摘 要： | 砂培盆栽试验结果表明:不同钾素水平的水稻冠层光谱反射率存在极显著差异,测试条件对结果影响较大。经比较,当培养砂子用黑布遮盖后结果更理想。对结果进行相关分析,发现水稻光谱变量与叶片钾含量之间存在着一定的相关性,当去除钾水平过量点后,钾含量与水稻光谱变量的相关性达显著水平。因此,利用光谱分析估测水稻钾含量(除过量钾以外)的可能性是存在的。
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| 关 键 词： | 水稻 冠层光谱 钾含量 相关分析 |
Study on the feasibility of estimating potassium content by rice spectral analysis. |
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| Wang Ke, Shen Zhangquan, Wang Renchao.Study on the feasibility of estimating potassium content by rice spectral analysis.[J].Journal of Zhejiang University(Agriculture & Life Sciences),1993(Z1). |
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| Authors: | Wang Ke Shen Zhangquan Wang Renchao |
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| Abstract: | Sand culture experiment was conducted to study the rice reflecting spectra of various potassium level. The results showed that the rice canopy reflecting spectra of various potassium levels had significant differences. The condition of spectral determination had an important effect on the results which was much better when the sand was covered by black cloth. Correlation analysis showed a good correlation between rice vegetation index and potassium content of rice. It is feasible, therefore, to estimate the potassium concentration by spectral analysis, which can be used in the diagnosis of potassium except in the diagnosis of potassium excess. |
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| Keywords: | rice canopy reflecting spectra potassium content correlation analysis |
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