ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Taking winter wheat in China as an example, large-scale crop planting areas automatic identification methods were researched based on time-series of MODIS—NDVI datasets. The characteristics of NDVI time series of winter wheat in China were firstly analyzed, and then the threshold values of extracting crop planting area were set and the extraction models of winter wheat were established, finally spatial distribution of winter wheat of 2010—2011 was obtained, the results showed that the extraction accuracy of winter wheat planting area was more than 81% compared with the average statistical data obtained in years. MODIS data of China in 2011 were used to monitor the growth condition of winter wheat, and the growth condition was compared with the average crop growth of the last five years. Results show that winter wheat growth condition has different characteristics both in spatial and temporal.