Adaptation and Application of Soybean Phenology Model in the North China Spring Soybean Producing Area
文献类型: 外文期刊
作者: Wang, Can 1 ; Yan, Xiaoyan 2 ; Zhang, Baogui 1 ;
作者机构: 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
2.Jilin Acad Agr Sci, Res Ctr Soybean, Jilin 136100, Jilin, Peoples R China
关键词: soybean;phenology model;maturity group;parameter optimization
期刊名称:2012 IEEE FOURTH INTERNATIONAL SYMPOSIUM ON PLANT GROWTH MODELING, SIMULATION, VISUALIZATION AND APPLICATIONS (PMA)
ISSN:
年卷期: 2012 年
页码:
收录情况: SCI
摘要: Accurate prediction of the development is essential for managing production practices such as determination of optimal planting date, choice of appropriate cultivar for a specific site. The phenology model SOYDEV, considering the responses of development to temperature and photoperiod, was adapted in the north China spring soybean producing area. A 2-year cultivar x location field experiment and a 2-year sowing dates experiment were conducted in this area. Using the model, we simulated cultivars designated as early, early-medium, medium and late maturity classes in the north China spring soybean area, which corresponded to maturity groups (MG) MG II, MG III and MG IV and MG V respectively. By holding other parameters constant, a single parameter, the maximum developmental rate at optimum temperature and photoperiod (R-max), was optimized on maturity group level and the resulting values gave acceptable predictions of phenological stages of R-0, R-1 and R-7 with root mean square errors (RMSE) within 7 days. Cultivar specific optimization of R-max and photoperiod response parameters improved further the prediction of R-0, R-1, R-3.5, R-5 and R-7 with RMSE being less than 2 days. It is concluded that the simplified approach for parameter optimization can improve the simulation accuracy for a better prediction of soybean development and be helpful for phenology prediction in the north China spring soybean producing area.
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