Abstract:

Fourier transform infrared spectroscopy (FTIR) was used to detect the spectral difference among leaf tips from rice (Oryza sativa L.) plants with different nitrogen fertilizer rates. The proposed spectral index, (A3400-A1653)/(A3400+A1653) (A denotes absorption valuet certain frequency (cm-1)), was found to decline with the increase of nitrogen fertilizer rates and the results suggested that FTIR may be useful to diagnose nitrogen status in crops.

不同供氮水平的水稻叶尖的傅里叶转换红外光谱
周启发¹  沈掌泉²  王人潮²

（1. 浙江大学生命科学学院，杭州310012；2.  浙江大学农业遥感与信息技术应用研究所，杭州310029）

摘要： 四个氮素水平处理的盆栽水稻(Oryza sativa L.)的叶尖在不同生育期均表现出明显的傅里叶转换红外光谱差异.新定义的光谱指数((A₃₄₀₀-A₁₆₅₃)/(A₃₄₀₀+A₁₆₅₃),A为某频率处的吸收值)随着施氮水平的提高而降低.结果表明,傅里叶转换红外光谱可用于诊断植物的氮素状况.

关键词： 水稻；氮；傅里叶转换红外光谱

通讯作者。E-mail:qifaz @ mail.hz.zj.cn.

Key words: Oryza sativa, nitrogen, Fourier transform infrared spectroscopy