小麦发育过程及生育期机理模型的检验和评价  

Validation and Evaluation of a Mechanistic Model of Phasic and Phenological Development of Wheat

作　　者：严美春[1] 曹卫星[1] 李存东[1] 王兆龙[1] 

机构地区：[1]南京农业大学

出　　处：《中国农业科学》2000年第2期43-50,共8页Scientia Agricultura Sinica

基　　金：国家教委跨世纪优秀人才基金;国家杰出青年科学基金

摘　　要：利用国内外 3组关于不同类型小麦品种与不同播期的田间试验资料对小麦发育过程及生育期机理模型进行了较充分的检验。结果表明 ,模型对大多数生育阶段的绝对模拟误差集中在 0～ 5d,平均差平方和的根值 ( root mean square error,简称 RMSE)也一般小于 5d,尤其对出苗期、分蘖期、雌雄蕊原基分化期、抽穗期的模拟精度高、误差小。Three sets of data from field experiments with different wheat varieties and different sowing dates in China and USA were used to test the model of accuracy for predicting the phasic and phenological stages of wheat. The results showed that the absolute prediction errors for most stages of growth and development ranged within 0～5d, and the root mean square errors were generally less than 5d. The model was of high accuracy and low error especially for emergence, tillering, stamen and pistil initiation and heading stages, reflecting an enhanced level of mechanism and prediction.

关 键 词：小麦 生育期 机理模型 发育过程 可靠性检验 

分 类 号：S512.101[农业科学—作物学]