Abstract
The research object is the variable-rate fertilization controlling system with the embedded computer as its core. On the basis of the XSBase270-S development platform and Windows CE operating system, this paper has presented the hardware structure of variable-rate fertilization controlling system, GPS data collection process, GPS data processing procedure, the flow sensor reading program and the controlling system of fertilization device, which are operated in a concurrent execution mode through the synchronic mechanism with the final purpose of achieving the variable-rate fertilization in an automatic and intelligent pattern.
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