摘要
通过定量描述甘薯主蔓长与粗、分枝数、叶面积指数、干物质积累与累积辅热积的关系，建立了甘薯适宜群体生长指标动态的模拟模型。利用试验资料封所建模型进行了实例分析，结果表明，本模型设计的生长动态指标与已有的高产栽培模式中实测结果平均相关系数达0．85以上，此模型封甘薯生长指标适宜动态具有较好的预测性。
A simulation model of growth index in suitable sweet potato group is developed through the quantitative description of relationship between main stem length, main stem diameter, number of branches, leaf area index, dry matter accumulation and accumulated product of thermal effectiveness and PAR （TEP）. Case analysis is made on the model by experimental data. The results showed that the average relative factors between the growth dynamic index in this design and really measured results in the existing cultural mode with high yield is up to 0.85, therefore this model has better prediction for the suitable dynamics of growth index in sweet potato.
基金
本文受山东省农业科学院高技术自主创新基金（项目编号：2006YCGDD035）资助.
关键词
甘薯
生长指标动态
模型
sweet potato
growth index dynamics
simulation model
