文献类型: 外文期刊
第一作者: Li, Shijuan
作者: Li, Shijuan;Xue, Yan
作者机构:
关键词: winter wheat;emulation system;growth and development;simulation model
期刊名称:COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE II, VOL 1
ISSN: 1571-5736
年卷期: 2009 年 293 卷
页码:
收录情况: SCI
摘要: In according with wheat ecophysiological characteristics, the author applied technologies of system engineering method, crop simulation and computer to build wheat developing process cooperative models including growth model, developmental phase models. water balance model and nitrogen balance model etc. With the support of basic data such as variety characteristics. weather data, soil level and cultivation management, then further constructed Wheat Production Emulation System (WPES) with several additional functions such as determining variety characteristic parameters. deciding the planting design. simulating wheat phenology stages and production features, warning of the nitrogen leaching in advance, simulating the water and nitrogen deficit degree and wheat growth three-dimensional display. This system was validated and calibrated through actual experiment for four wheat growing seasons in Hebei province. Predicted yield and biomass were significantly correlated with observed data (R2>0.47), and the Root Mean Square Error were 5.89% and 8.94% of its observed average yield and biomass. The results verified its strong mechanism and prediction performance as well as its Universal adaptation.
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