应用GIS分析限制玉米高产的土壤养分因子的序位演变

Analysis of Changes in Sequence of Limiting Factors of Soil Nutrient in Maize Production Using GIS Technology

应用土壤养分系统研究法,以GIS平台的ARC/INFO7.0和ARCVIEW3.2等软件为辅助手段对我省具有代表性的公主岭市刘房子村323hm2的耕地取样分析其13种养分值,应用GIS技术绘制各元素的养分分布图。经分析得出:我省主要土壤的限制玉米高产的营养因子顺序已由80年代的氮、磷、锌和钾演变成氮、钾、锌、硫和磷,并提出相应的施肥措施与方法。

hectares of farmland of Liufangzi village in Gongzhuling city were selected and 13 nutrient elements were determined using systematic research method of soil nutrients aided with GIS based ARC/INFO 7.0 and ARCVIEW 3.2 software. Nutrient distribution maps of each element were drawn with GIS technology. Results shown that the sequence of limiting factors of main soil nutrients in maize production had changed from N?P?Zn and K in the eighties of last century to N?K?Zn?S and P. Corresponding fertilizer application method was also put forward.