The Research Of The Visual Plant's Root System Simulation And Its Growth Restraint Condition

Along with the computer graph technology rapid development, the computer graphics already have been became advantageous tool,as producing graph and processing picture. Based on the traditional computer graphics, artificial life method use of behavioral modeling, cognitive modeling and evolution modeling to simulate the processes of life, and create a animation roles that can respond to the environment, have intelligent and autonomy.Virtual plant is using computer simulation technology to simulate the plant growth and development in 3D. It is rapidly developing with the advances in information technology .It is research area of computer graphics, Artificial Life and agricultural information technology. Generated plants will be able to reflect the reality plant's structure. Simulation of plant growth consists of the plant structure simulation and the plant physiological simulation. From the external morphology, plants can be divided into canopy and root. However, the environment of roots can not be seen and complicated, the limitations of measurement techniques and theoretical methods, So far, the studies have focused primarily on the ground plant, its root system is a weak link, Root model simulation results, both in function and some models have lagged far behind that ground plant. Therefore, how to build a plant roots model, how to combine its structural model and the function model what is the focus of the study.In this, we have adopted a method based on fractal theory L-system, used computer graphics to simulate the 3D model of soybean roots. According to the physiological function of plant root, we pose the water model of root and soil moisture equation, the model based on the mechanical constraints of locality, then, we can better realize the function model of plant roots in the simulation. We explore the constraints based on methods of artificial life of soybean root structure and physiological function. We verified the two functional model of the plant root growth, thus realizing the integration on the root structure model and the physiological functions model. This method can enrich simulation of plant root growth. We also can apply the visualization model to Biology teaching, model can enable students from the constraints of space and time, observed flexibly the Virtual plant growth in 3D, thereby making satisfied teaching results.