作物学报Issue(5)：766-777,12.DOI:10.3724/SP.J.1006.2015.00766
油菜生育期动态模拟模型的构建
Dynamic Simulation Model for Growth Duration of Rapeseed (Brassica napus)
摘要
Abstract
Field experiments with different sowing dates were carried out for two successive years using 13 rapeseed (Brassica napus) varieties with different growth durations to focus on the growth and development processes of the varieties under different photoperiod-temperature conditions. A dynamic simulation model for predicting growth duration of rapeseed was developed by a combined analysis on different factors. The theory of rapeseed physiological ecology, the principle of constant physiological de-velopment time (PDT), and the relationships between different growth and development stages and environmental factors such as temperature and photoperiod were the basis for simulating the model. Logistic curve was used to simulate photoperiod effect, harmonic analysis was used to analyze the changes of day and night temperatures, and piecewise functions of sine exponent equa-tion was adopted to describe thermal and vernalization effects. Four parameters with genetic characteristics, including photoperiod susceptibility, temperature sensitivity, physiological vernalization time and pod period factor, were determined and verified for the accuracy of the model. The test results showed the average of the root mean square errors (RMSE) between the observed and simulated values was 2.67 days for different sowing dates, and 3.74 days for different varieties, respectively. Clustering analysis using four genetic parameters verified the classification of 13 varieties and conformed to their characteristics. The results indi-cated the model can reveal relative accurately within certain range the response of rapeseed to temperature and photoperiod. Therefore, it can be used as a reliable tool for predicting the growth duration of rapeseed.关键词
油菜/生育期/生理发育时间/动态模拟模型Key words
Rapeseed (Brassica napus L.)/Growth duration/Physiological development time (PDT)/Dynamic simulation model引用本文复制引用
张亚杰,李京,彭红坤,陈秀斌,郑红裕,陈升孛,刘安国,胡立勇..油菜生育期动态模拟模型的构建[J].作物学报,2015,(5):766-777,12.基金项目
本研究由国家科技支撑计划项目(2010BAD01B01),国家现代农业产业技术体系建设专项(NYCYTC-00510)和湖北省现代农业产业技术体系建设项目资助。 （2010BAD01B01）
