The results of the method showed that the soil nutrient information database on the field was suitable for variable rate fertilization decision and management in precision agriculture.
应用实践表明：建立的田间土壤养分信息库可以应用于精确农业变量施肥的决策和作业管理。
The difference of soil nutrient between operation units can be learned from the maps, and the decision and operation for variable rate fertilization can be made according to the difference.
依此可以了解田间土壤养分差异，并根据该差异进行变量施肥决策和变量施肥作业。
The control and actualize system of variable rate fertilization consist of DGPS, Field Computer, Hydraulic Motor, Ground Sensing Radar and fertilizer assembly.
变量施肥的控制实施系统包括差分gps系统、田间计算机、液压马达、测速雷达和排肥器总成。
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