基于田间试验的水稻模型ORYZA2000区域参数比较

The Comparison of Regional Parameters Of ORYZA2000 Based on The Field Test

利用江苏南京、安徽宣城两地的水稻田间试验数据和气象资料,对ORYZA2000模型基本作物参数进行调整,包括不同发育阶段的发育速率、干物质分配系数、比叶面积等。两试验点的作物营养生长参数(DVRJ)和生殖生长参数(DVRR)差异很大,反应了模型的区域差异性。模拟效果均能准确反应叶面积指数、生物量的动态变化过程,在地上部生物量的模拟准确度最高。两试验点的叶面积指数、地上部生物量、绿叶生物量、茎生物量和穗生物量的归一化均方根NSMSE值分别为9%、19%、18%、13%、25%和16%、25%、17%、19%、24%,因而南京试验点的模拟效果比宣城好,参数更具区域适应性。

In this paper,the basic crop parameters including development rate,partitioning of biomass,specific leaf area of the rice growth model ORYZA2000 were adjusted by the field test data observed from two agrometeorological stations（Jiangsu Nanjing and Anhui Xuancheng） and the daily meteorological data.It was showed that the development rate during juvenile phase（DVRJ） and reproductive phase（DVRR） of Nanjing test station was significantly different from that of Xuancheng test station,which reflected the regional difference of the model.The all simulated values could accurately react the dynamic change processes of leaf area index and biomass,and the total aboveground dry matter had the highest simulation accuracy.The normalized root mean square errors（NRMSE） for LAI,total aboveground dry matter,dry weight of green leaves,dry weight of stems,dry weight of storage organs were 9%,19%,18%,13%,25% and 16%,25%,17%,19%,24% for these two test stations,respectively.These results showed that the simulation results in Nanjing station were better than that of Xuancheng station,the parameters of Nanjing station have more regional adaptability.