| 摘要: |
| 本文重点论述了各种光谱指数(IR-R/IR+R,IR/R,lg IR/R)对小麦生长势监测和生物量预报的意义与机制。文章还对 G/R(绿波段反射率与红波段反射率之比)光谱指数作出了有意义的信息提取。最后讨论了二维图法(R,IR)确定作物产量水平的步骤。 |
| 关键词: 近红外波段 光谱指数 横向比较 产量水平 小麦产量 小麦生长 光谱反射率 生物量 |
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| THE ANALYSIS AND APPLICATION ON SPECTRAL INDICES OF WHEAT |
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| Abstract: |
| The results of the study further prove: 1.From the development of wheat growth,it is seen that the increase and decrease of (IR-R)/(IR+R) and IR/R values are consistent.(lgIR/R is of the same function as the above two spectral indices. 2.G/R can reflect the accumulation tendency of increasing biomass in the whole growing season.Horizontally,G/R values go up gradually,i.e. 0.63(pre-winter),0.07(green turning)0.67(jointing),0.74(milking) and 1.30(yellow ripe).verti-cally it is seen that G/R values rise with a... |
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