| 土壤中总氮与总磷含量的近红外光谱实时检测方法 |
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| 引用本文： | 袁石林,马天云,宋韬,何勇,鲍一丹.土壤中总氮与总磷含量的近红外光谱实时检测方法[J].农业机械学报,2009,40(Z1):150-153. |
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| 作者姓名： | 袁石林 马天云 宋韬 何勇 鲍一丹 |
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| 作者单位： | 浙江大学生物系统工程与食品科学学院,杭州,310029 |
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| 基金项目： | 国家自然科学基金资助项目，浙江省自然科学基金资助项目，宁波市重大科技攻关资助项目 |
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| 摘 要： | 以浙江省潮化盐土为研究对象,用近红外光谱分析技术探测土壤氮(N)和磷(P)的含量.从试验田采集6组土样,每组取20个样品,共计120个样品.利用均值法、卷积滤波确定最终光谱数据,然后采用偏最小二乘回归法(PLS)及最小二乘支持向量机(LSSVM)分别建立了土壤总氮和总磷的近红外光谱模型,其中采用PLS所建模型的相关系数分别为0.9454(N)、0.9327(P),预测标准误差分别为0.0321(N)、0.0089(P).采用LSSVM所建模型的预测相关系数分别为0.9503(N)、0.9547(P),预测标准误差为0.0378(N)、0.0101(P).分析结果表明采用近红外分析技术可以预测土壤总氮(N)和总磷(P)的含量.
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| 关 键 词： | 近红外光谱 测量 土壤总氮 土壤总磷 偏最小二乘法 最小二乘支持向量机 |
-time Analysis of Soil Total N and P with Near Infrared Reflectance Spectroscopy |
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| Yuan Shilin Ma Tianyun Song Tao He Yong Bao Yidan.-time Analysis of Soil Total N and P with Near Infrared Reflectance Spectroscopy[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(Z1):150-153. |
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| Authors: | Yuan Shilin Ma Tianyun Song Tao He Yong Bao Yidan |
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| Institution: | College of Biosystems Engineering and Food Science;Zhejiang University;Hangzhou 310029;China |
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| Abstract: | The tide salt clay in Zhejiang Province was selected as research object,and the soil N and soil P were analyzed with NIR spectroscopic techniques.Six group samples were collected from a rice farm.Several kinds of nutritional water with different concentrations were added to the six groups,and then the samples were dried and rubbed.At last,120 samples were got from six groups equably.Standard normal variate(SNV),multivariate scatter correction(MSC) and smoothing of moving average were used to process the spe... |
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