基于GIS与GPS的中国农村精准施肥的方法研究

The Research on the Method of Precision Fertilization Based on GIS and GPS in China

在利用GIS和GPS研究土壤养分空间变异的基础上,以农户作为精准施肥的单元,探讨在中国农村进行精准施肥的途径。结果表明,不同农户地块养分存在一定空间变异性,由此导致相邻农户施肥量存在差异性,而采用农户为单元的施肥推荐既可以避免土壤养分空间变异造成的推荐施肥偏差,又可考虑中国农村分散经营的实际的状况,从而使土壤养分管理更加精细化。

The research discussed the approach of Precision Fertilization in China, which was based on GIS and GPS, and take the farmers＇ household land as the unit. The result indicated that different units had nutrient spatial variation, which induced the difference of fertilizing between the peasant＇s coterminous lands. The recommended prescription of fertilization, which take the farmers＂ household land as unit can not only avoid the warp of recommended prescription caused by the soil nutrient spatial variation but also consider the fact of small scale farming in our countryside. It can help the soil nutrient management to be finer and more rational.