DYNAMIC MODEL OF CROP GROWTH SYSTEM AND NUMERICAL SIMULATION OF CROP GROWTH PROCESS UNDER THE MULTI—ENVIRONMENT EXTERNAL FORCE ACTION

• Published in: Applied mathematics and mechanics Vol. 24; no. 6; pp. 727 - 737
• Main Author: 李自珍 王万雄 徐彩琳
• Format: Journal Article
• Language: English
• Published: Department of Mathematics, Lanzhou University, Lanzhou 730070, P.R.China%State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730070, P.R.China 01.06.2003
• Subjects: 作物生长; 动力学模型; 数值模拟; 环境外力作用; external force of environment; crop growth; dynamic model; numerical simulation
• ISSN: 0253-4827; 1573-2754
• DOI: 10.1007/BF02437875

According to the biomechanic theory and method, the dynamic mechanism of crop growth under the external force action of multi-environmem factors ( light,temperature, soil and nutrients etc. ) was comprehensively explored. Continuous-time Markov (CTM) approach was adopted to build the dynamic model of the crop growth system and the simulated numerical method. The growth rate responses to the variation of the external force and the change of biomass saturation value were studied. The crop grew in the semiarid area was taken as an example to carry out the numerical simulation analyds,therefore the results provide the quantity basis for the field management. Comparing the dynamic model with the other plant growth model, the superiority of the former is that it displays multi-dimension of resource utilization by means of combining macroscopic withmicrocosmic and reveals the process of resource transition. The simulation method of crop growth ,rystem is advanced and manipulated. A real simulation result is well identical with field observational results.