It had been found that removal of flowering shoots at a young stage of growth with less pruning of old branches tends to stimulate growth of the remaining shoots and fruit set of adjacent inflorescences, Jean Stephan studied the effect of pruning strategies on shoot demography and development during 2 years based on experiment and demographic approach. Reasonable pruning plays a key role in tree fruit quantity and quality. Pruning treatment is one of common measures for architecture study in perennial fruit tree cultivation. Tree architecture plays a key role in foliage distribution and consequently in light interception and carbon acquisition, which in turn strongly affect the reproductive growth of fruit trees. This work is the foundation of future research, which will simulate the apple tree development of architecture and biomass after pruning treatment over time. Result indicates that simulation is efficient, accurate and timely judgment of pruning reaction is possible. Stochastic 3D apple tree architectures after being pruned also can be simulated. Reaction laws of apple tree pruning are extracted from the analysis on the experiment data. The interactive pruning and automatic pruning with setting conditions are realized in the software. Then, the simulation software of apple tree pruning is build based on the Qt framework and OpenGL graphics library. First, architectural development of apple tree was analyzed and stored in xml file. Virtual apple tree is built as a case to study pruning treatment in this paper. Combining fruit tree growth theory with mathematics model and software development is an effective way in agricultural research. Pruning treatment is one of the important management practices of perennial fruit tree cultivation.

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