摘要
借鉴积温学的原理 ,结合紫花苜蓿 (Medicagosativa)生理生态学特性 ,建立了水分限制条件下干旱沙区紫花苜蓿生长发育模拟模型 .该模型主要由生长发育阶段子模型、叶面积动态子模型、干物质积累子模型和干物质分配子模型组成 .模拟计算结果表明 ,该模型能较好地预测沙地紫花苜蓿生长发育进程、叶面积变化动态及牧草产量变化动态 ,具有一定的实际应用价值 .
Based on the theories of accumulated temperature and on the physio ecological characteristics of Medicago sativa , a simulation model for its growth under soil water stress in arid sandy region was developed. The model was mainly composed of four modules: the stage module of growth, the dynamic module of leaf area index, the accumulated module of dry matter, and the distributive module of dry matter. After simulating and calculating, the model could be used to predict the growing progress and dynamic changes of leaf area and yield for herbage in sandy region. The result shows that the application of the model to production is usually effective.
出处
《应用生态学报》
CAS
CSCD
2002年第12期1605-1609,共5页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划项目 (G2 0 0 0 0 1860 7)
中国科学院知识创新工程重大资助项目 (KSCX1 0 8)
