基于GIS的土壤变量施肥定量计算及其应用研究

A Soil-variable Fertilization Model Based on GIS and Its Application

通过实验区的采样数据,利用典型的经验公式计算出各采样点的合理施肥量及相应的土 壤肥力指数,并用GIS方法绘制成变量施肥图和土壤肥力分布图,结果表明:田块内部土壤肥力 是有差异的,不同区域的施肥量是不同的.

Using data sampled from Wusi Farm of Shanghai,input of fertilizer and the soil index of fertilizer are calculated with an empirical formula. At the same time,the variable input map of fertilizer and the fertilizer map are mapped using GIS. The result shows:There exists difference with the fertilizer in the field and the input of fertilizer is different too.