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1. 发明授权

US06393927B1 Method and apparatus for real-time determination and application of nitrogen fertilizer using rapid, non-destructive crop canopy measurements 失效
标题翻译：使用快速，无损作物冠层测量法实时测定和应用氮肥的方法和装置
公开(公告)号：US06393927B1
公开(公告)日：2002-05-28
申请号：US08727125
申请日：1996-10-08
申请人： Gregory L. Biggs , Tracey M. Blackmer , Tanvir H. Demetriades-Shah , Kyle H. Holland , James S. Schepers , John Henry Wurm
发明人： Gregory L. Biggs , Tracey M. Blackmer , Tanvir H. Demetriades-Shah , Kyle H. Holland , James S. Schepers , John Henry Wurm
IPC分类号： A01C1500
CPC分类号： A01C21/007
摘要： A method and apparatus for the real time determination and application of optimum amounts of nitrogen fertilizer to corn and other arable crops such as cotton, sugar beats, wheat, etc. by the use of rapid, non-destructive sensors and various fertilizer application methods. In a first embodiment, optical reflectance measurements of the crop canopy and a reference strip at the fertilizer response plateau are taken by sensors carried by a center pivot irrigation system. A sensor controller receives, stores and analyzes the sensor data as well as position data received from a center pivot controller. The sensor controller then sends commands to the center pivot controller to order fertilizer application, as necessary, through the irrigation system. A second embodiment of the invention utilizes a tractor drawn fertilizer applicator with the sensors mounted on the application booms. As in the first embodiment, a sensor controller receives, stores and analyzes reference strip and crop canopy reflectance data and sends commands to the tractor fertilizer controller to order fertilizer application. This second embodiment may also utilize the Global Positioning System to provide tractor position for storage along with crop data for later use and comparison.
摘要翻译：一种用于通过使用快速，无损坏的传感器和各种肥料施用方法，对玉米和其他可耕作物如棉花，糖，小麦等实时确定和应用最佳氮肥的方法和装置。在第一实施例中，作物冠层和肥料响应平台上的参考条的光学反射率测量由中心枢轴灌溉系统承载的传感器获取。传感器控制器接收，存储和分析传感器数据以及从中心枢轴控制器接收的位置数据。然后，传感器控制器将命令发送到中心枢轴控制器，根据需要通过灌溉系统对施肥进行排序。本发明的第二个实施例利用一种拖拉机拉肥机，其中安装有应用臂的传感器。如在第一实施例中，传感器控制器接收，存储和分析参考条和作物冠层反射数据，并向拖拉机肥料控制器发送命令以订购施肥。该第二实施例还可以利用全球定位系统提供用于存储的拖拉机位置以及作物数据以供稍后使用和比较。

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