谷物联合收获机测产系统性能试验

引进Ag Leader谷物测产系统,在国产中小型谷物联合收获机平台上开展了测产系统性能试验.谷物测产系统主要由包括流量传感器等在内的多路传感装置、终端显示及控制平台和GPS系统构成.首先进行了系统传感器的标定试验,然后进行了田间小麦的收获试验.将试验获得的产量数据进一步进行了处理,通过产量数据点的空间自相关性分析发现,产量值采样点在20 m范围内的的相互依赖程度较高；半方差分析表明,测产区域的产量分布空间变异明显,呈现空间聚集分布的特点.克里格插值后的产量分布图呈现斑状分布的趋势,也直观反映了聚集分布的特征,可以为精细农业的实施提供必要的理论依据.

Performance Test of Yield Monitor System for Grain Combine Harvester

Ag Leader grainyield monitor system was introduced. The yield monitor system experiment was carried out on the domestic medium and small combine harvester. The grain yield system was mainly composed of multi-channel sensors including grain flow sensor, terminal display processor and GPS system. First, the calibration experiment of system was executed. And then, the harvesting experiment of winter wheat in the field was performed and the acquired data were processed. With the analysis of spatial autocorrelation method, yield data presented high dependence within 20m. Semi-variance analysis showed that the variation of the yield data was obvious which presented the property of aggregated distribution. The yield map based on Kriging interpolation showed the trend of patch distribution and the properties of aggregated distribution. The experimental results could provide necessary theoretical evidence for the application of precision agriculture.