农田粮食产量分布信息数字化研究

为了获取农田作物产量分布信息，发展数字农业，研究了机收时粮食产量分布信息的获取和分析方法。借助于全球定位系统和地理信息系统，经过坐标转换等数据处理，快速生成计划收割区域的数字地图，在机载计算机上实时显示联合收获机行走的轨迹。对测产系统各传感器信息进行数据处理，由动态产量数据值及其定位信息，实时绘制采样点粮食产量分布图，结合割台高度信息，实时获取收获面积。借助于后处理手段，对实测数据进行空间数据分析，得到准确的粮食产量分布。本系统能快速生成待收割区域的数字地图，能实时显示联合收割机行走轨迹、产量波形曲线、产量分布图，实时显示收割面积。粮食产量分布信息数字化，为精准农业生产提供指导。

Digitization of grain yield and distribution information in farmland

To acquire grain yield distribution information and develop digital agriculture, a method for acquiring and analyzing yield data at harvesting time was studied. By Global Positioning System(GPS) and Geographical Information Systems(GIS), after coordinate transformation and other data processing, digital maps of the territories were obtained, and the combine track was displayed in the digital map dynamically. Through disposing the data of the yield-instrument sensors and GPS receivers, yield wave curve and a yield map of the sampling points can be generated and revealed according to the yield data together with its corresponding coordinates. Through the header height, real-time reaped area was calculated. During post treatment, spatial analyses were made to attain the yield distribution. Experiments show that the system can create a digital map rapidly, and display the combine track and the reaped area synchronously. The digitization of grain yield distribution can provide guidances for farming production scientifically.