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變量施肥處方圖識別與位置滯后修正方法
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“十一五”國家科技支撐計劃資助項目（2008BAB38B06、2009BADB5B03-2）和農業(yè)部“948”重點項目（2011-G32）


Prescription Map Identification and Position Lag Calibration Method for Variable Rate Application of Fertilizer
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    摘要:

    處方圖變量施肥作業(yè)系統(tǒng)的技術關鍵在于根據(jù)處方圖精確一致地“按圖作業(yè)”?；诿嫦驅ο蠓椒?，設計并實現(xiàn)了變量施肥作業(yè)系統(tǒng)控制軟件，提出基于作業(yè)機械位置的實時處方圖識別算法，測試結果表明，單位處方識別時間不超過100 ms，能夠滿足實際系統(tǒng)作業(yè)的需要。在分析位置滯后原因的基礎上，建立了變量施肥作業(yè)系統(tǒng)的位置滯后模型，通過田間實測試驗，施肥時間延遲為1.84 s。

    Abstract:

    The key technology for map-based variable rate application of fertilizer lies in fertilizer should be applied precisely at each location within the field according to prescription map. Software for variable rate application control was developed based on object-oriented programming approach. A kind of algorithm for real-time application map identifying relying on machine location was designed and successfully implemented. Field test showed that prescription map cell was identified less than 100 ms, which could meet the requirements of actual field application. A model to determine positional lag was developed for map-based variable rate application system by analysis of factors causing position lag. In addition, field tests were conducted and result showed that delay time was about 1.84 s.

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孟志軍,趙春江,付衛(wèi)強,冀永祥,武廣偉.變量施肥處方圖識別與位置滯后修正方法[J].農業(yè)機械學報,2011,42(7):204-209. Meng Zhijun, Zhao Chunjiang, Fu Weiqiang, Ji Yongxiang, Wu Guangwei. Prescription Map Identification and Position Lag Calibration Method for Variable Rate Application of Fertilizer[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(7):204-209.

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