Variable-Rate Fertilizer Prescription is not only the premise of realizing the variable-rate technology in precision agriculture, but also the basis of variable-cultivation of fertilizer machine in the field.

Intelligent spatial decision support system for variable rate fertilizing -using ArcView GIS on precision agriculture;

Research and development of the proportionally-mixed variable rate fertilization system for cotton drip irrigation under mulch film;

Study on intelligent decision-making sustaining system of variable rate fertilization in precision agriculture;

Research on Variable Rate Fertilization Control System in Precision Agriculture;

Make use of the velocity system of valve-controlled motor based on 89C51 single-chip microcomputer, the variable rate fertilizer applicator for precision agriculture can be realized.

A kind of control system of variable rate fertilizer applicator in precision agriculture is introduced.

Research on ComGIS-based prescription recommend system for variable-rate fertilization in precision agriculture;

Simulation system for the influence of management zone size on variable-rate fertilization;

Decision making method for variable-rate fertilization based on data envelopment analysis and artificial neural network;

Research of automatic variable fertilization control system based on AgGPS;

Assessment of the influence of soil nitrogen supplies and variable fertilization on winter wheat growth condition using airborne hyperspectral image;

And it was therefore decided on how to prescribe for the variable fertilization of spring seeding soybeans in 2003.