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通过测定小麦生育期内叶绿素含量变化及分析叶绿素含量与麦蚜量间的动态关系 ,提出小麦蚜虫灾害遥感监测的植物生理学依据。通过 1 995、1 996和 1 998年的地面光谱测量 ,绘制出蚜量同小麦光谱的相关性曲线 ,证明利用小麦的反射光谱植被指数 RVI值监测麦蚜的可行性 ,并给出了确定小麦蚜虫防治点即百株蚜量 5 0 0头左右的 RVI值方法。为确定麦蚜虫害最佳防治时间提供依据。
The plant physiology basis of wheat aphid disaster remote sensing monitoring was put forward by measuring the change of chlorophyll content during wheat growth period and analyzing the dynamic relationship between chlorophyll content and the amount of wheat aphid. The correlation curves of aphids and wheat spectra were drawn by the ground spectral measurements in 1995, 1996 and 1998, and the feasibility of monitoring the wheat aphids by using the RVI values of the reflectance spectral reflectance index of wheat was demonstrated. Aphid control point that hundred plants aphids around 500 RVI value method. In order to determine the best prevention and control of wheat aphid infestation provide the basis.