Visual Simulation Of Maize Root In Compacted Red Soil

Corn is the country’s second-largest crops, its production is widely distributed. Currently, corn in Yunnan has become the crop which is the largest planting area and the second yields. But corn’s production in Yunnan is still at a domestic low level. Starting from the perspective of good law, try changing farming practices to improve soil physical properties, provide a better soil environment for the growth of corn roots, and lay a good foundation for increasing corn production.Yunnan corn planting soil is red soil, poor soil, shallow topsoil, poor physical and chemical properties, difficult subsoiling, restricting the development of Yunnan corn industry. Subsoiling is one of the effective measures to improve the yield of corn its main purpose is to eliminate the deep soil compaction. From the perspective of reducing the soil compaction by subsoiling, this paper as a basis for researching the effect of red soil subsoiling on root growth of maize in Yunnan.This paper explores the morphology and topology of corn roots. Combines the methods of virtual plant’s research, and use MFC and OpenGL on VC6.0platform to build a simulation of corn root system. The system assumes that soil compaction effects on the growth rate (radial and axial), the growth direction and growth density of maize roots, through round table triangulation of axes, a visual model has been established, by entering soil compaction, the corn roots geometry parameters and growth parameters into the system, has got an intuitive visualization of three-dimensional images of corn roots, and has outputed the numerical results of the total number of roots of corn roots, all kinds of root length. Has achieved conformational changes of visual simulation of the maize roots under different soil compaction. The simulation results show that the simulation model can be visually and really displayed conformational changes of corn root under different soil compaction. Has provided a new quantitative analysis method for corn roots under different red soil compaction.This paper as corn as test subjects, a corn cultivate test has been done under no water and fertilizer stress in greenhouse. This test verifies the accuracy and stability of the simulation model of maize roots, the actual state and law of maize root growth has been achieved under different soil compaction, has determined a more reasonable soil compaction range for maize growth under Yunnan red soil environment, that soil bulk density is about1.2g/cm3. The test results showed that the soil bulk density about1.2g/cm3is the best condition of the corn root development in red soil, when it deviated from this range of soil bulk density, root’s diameter will be thicker, root’s total length becomes shorter, the number of secondary roots will reduce, root’s fresh and dry weight will be lighter.