The application of computers in agriculture can be divided into the following five areas: numerical calculations in agricultural science; the establishment and use of agricultural databases; agricultural computer simulation systems; agricultural computer expert systems; Internet and agriculture.

Agricultural computer expert system, that is, the use of computer simulation of agricultural experts, it is a combination of soil, meteorology, water conservancy, seeds, fertilizers, pest control and other factors affecting the effectiveness of agricultural production, bringing together the group wisdom of agricultural experts, the proposed sowing, fertilizer, field management and other aspects of the optimal program, so as to guide the farmers to plant scientifically, and get better results.