甘薯干物质分配及产量形成模拟研究

本研究根据甘薯器官生长与温度和辐射的关系，建立了基于累积辅热积的甘薯干物质分配及产量形成的模拟模型，并利用试验资料对模型进行了检验。研究结果表明，模型对地上部分干重、地下部分干重和块根干重的模拟结果与实测值均符合较好，模拟结果与实测值之间的拟合度值分别为0.97、0.96、0.95（均为0.01水平显著相关），预测相对误差分别为1.23%、1.89%、2.45%。模拟系统是采用C++ Builder6.0为编程语言，在Pentium(R) 4 CPU、512MB内存计算机、中文Windows XP操作平台上开发的可执行模型系统。与已有的大田作物生长模型相比，本研究建立的模型不仅预测精度较高和功能全面，而且模型参数易获取，具有较强实用性。模型能够预测甘薯干物质分配及产量指标，从而为甘薯生产管理和环境调控的优化提供决策支持。

Simulation Study on Dry Matter Partition and

A simulation model of dry matter partition and yield formation based on the accumulated product of thermal effectiveness and PAR(TEP)is designed in this paper in accordance with the relationship between organ vegetation of sweet potato and temperature and radiation and is validated by the experimental data.The results show that the simulated results of shoot dry weight,root dry weight and tuber root dry matter conform to the actually measured values very well.The fit values between the simulated results and actually measured values are separately 0.97,0.96 and 0.95(all obviously related to 0.01 levels)and the forecasted relative errors are separately 1.23%,1.89% and 2.45%.The simulation system uses C Builder6.0 to develop an executable model system on Pentium(R)4 CPU and 512MB memory computer with Windows XP operation system.Compared with the existing vegetation model of field crop,the model created in this paper not only has high forecast accuracy and complete function but also acquires the parameters easily and has strong practicability.The model can forecast the dry matter partition and yield index so as to provide decision-making support for the production management optimization.