| Cite this article: | 王晓东,岳伟,陈金华,等.安徽沿江江南地区油菜渍害胁迫条件下AquaCrop模型验证*[J].灌溉排水学报,2020,(12):-. |
| Xiaodong Wang,Wei Yue,Jinhua Chen,et al.安徽沿江江南地区油菜渍害胁迫条件下AquaCrop模型验证*[J].灌溉排水学报,2020,(12):-. |
|
| |
|
|
| This article has been：Browse 1724Times Download 0Times |
|
|
|
| DOI： |
|
| Rape growth simulation in Anhui Yanjing and Jiangnan region based on AquaCrop model |
|
Xiaodong Wang1, Wei Yue1, Jinhua Chen1, Xiaoyi Chen2
|
|
1.Anhui Agricultural Meteorological Center;2.Anhui Meteorological Institute
|
| Abstract: |
| In order to evaluate applicability of AquaCrop model on simulating rape growth in Anhui Yanjiang and Jiangnan region, and discuss the application feasibility of the model on agrometeorological business service, in this study we firstly based on the local data(basic parameters of rape, temperature and other meteorological data, soil physical characteristic parameters) and measured rape field observation waterlogged experiment data of 2010-2013 to improve the AquaCrop model parameters with localized correction and test simulation effects, also carried out suitability verifying on historical yield data of rape observation sites in Anhui Yanjiang and Jiangnan region. based on the localized parameters correction AquaCrop model, the simulation results showed that the average absolute error of rape biomass and yield between the actual measured and simulated values is 328.1 kg/hm2 and 101.9 kg/hm2 respectively, the average relative error is 6.3% and 6.8%, the model performance index is 0.89 and 0.91, on the whole the AquaCrop model can better simulate rape biomass and yield on the continuous rain and less sunlight condition during rape flowering stage. In addition suitability verification of AquaCrop model in Anhui Yanjiang and Jiangnan region show that relative error of rape yield simulation is 5.2%-8.1% at Xuancheng rape observation site, as a whole the simulation effect is better, relative error of rape yield simulation is 6.8%～11.2% at another three rape observation site in Anhui Yanjiang and Jiangnan region such as Chizhou, Dongzhi and Shexian, although relative error of partial simulation sample exceed 10%, exist a certain extent deviation, as a whole AquaCrop model on simulating rape yield have a certain reference value in Anhui Yanjiang and Jiangnan region, also promote supportive capabilities of rape yield forecast business application.Now we haven’t see related research reports on simulating rape yield of AquaCrop model at home and abroad, first applicated the growth of crop water model-AquaCrop on rape growth simulation in Anhui Yanjiang and Jiangnan region, the result showed that it had a certain simulation accuracy on rape biomass and yield, and most of the simulation error is under 10%, the error is in a reasonable range. so the AquaCrop model have a very good reference value on agricultural meteorological business service in Anhui province. In addition, we used AquaCrop model simulating the soil volumetric moisture, the results showed that the average
absolute error of soil volumetric moisture content between the actual measured and simulated values is very little. |
| Key words: AquaCrop model; Anhui rape; Waterlogging stress; yield prediction |
|
|
|
|
|
|
