考研政治辅导书基于高分二号—NDVI的大豆遥感估产的时相选择
slow down作者：张淮栋 陈争光 张成龙
等一秒钟来源：《湖北农业科学》2018年第06期the hurt locker
摘要：根据植被指数的时间变化规律以及不同时期的植被指数与产量之间的相关性，确立适用于东北地区的大豆遥感估产的最佳时期。7月下旬至8月中旬获取的作物NDVI与作物产量之间的相关性最强，并且不同时期的NDVI之间的相关性非常弱，在利用NDVI预测大豆单产时要采用7月下旬和8月中旬两个时期的NDVI。NDVI与大豆单产之间存在线性正相关关系，NDVIbreak与大豆单产的相关性并不是很高，表明NDVI并不是惟一与大豆单产有关的变量。
ecstasy 关键词：大豆；植被指数；NDVI；遥感；估产
stunning中图分类号：S565.1 文献标识码：A 文章编号：0439-8114（2018）06-0103-05有道翻译官方下载
DOI：10.14088/jki.issn0439-8114.2018.06.026
Abstract： According to the temporal variation of vegetation index and the correlation between vegetation index and yield in different periods， the best time for soybean yield es
timation in Northeast China will be established. The correlation between crop NDVI and crop yield obtained from late July to mid-August was the strongest百度翻译英语， and the correlation between NDVI in different periods was very weak. When NDVI was ud to predict soybean yieldzichen， the of NDVI late July and mid-August was ud. There is a linear positive correlation between NDVI and soybean yield， and the correlation between NDVI and soybean yield is not very high， indicating that NDVI is not the only variable related to soybean yield.
