摘要
播种日期对冬小麦生长发育、产量和品质形成均有一定的影响。利用 2 0 0 3年拔节期的LandsatTM卫星的NDVI数据 ,成功地监测了冬小麦的播种日期。提出了基于NDVI和播种日期的冬小麦的遥感估产的优化模型 ,并在抽穗期至乳熟期的 3次生育期的遥感估产中得到了成功验证与应用。利用出粉率与播种日期的显著相关特性 ,采用拔节期的LandsatTM卫星的NDVI数据 。
The seedtime plays an important role on the growth, yield and quality of winter wheat. Firstly, the seedtime was successfully remotely sensed by NDVI derived from a LandSat TM image captured in elongation stage. Secondly, an optimized yield estimation model was designed based on NDVI and seedtime, and the optimized model was successfully tested by 3 LandSat TM images captured in heading, grain filling and milking stages. Finally, the relation between flour extraction and seedtime was set up, and the flour extraction was successfully predicted by NDVI data derived from LandSat TM image which was captured in elongation stage.
出处
《遥感信息》
CSCD
2005年第1期28-31,共4页
Remote Sensing Information
基金
国家 8 63项目 ( 2 0 0 3AA2 0 90 40 )
北京市自然科学基金 ( 60 2 10 0 2 )资助
