Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (01): 38-44 .doi: 10.3864/j.issn.0578-1752.as-2003-2030

• TILLAGE & CULTIVATION·PHYSIOLOGY & ECOLOGY • Previous Articles     Next Articles

A Knowledge Model for Design of Suitable Dynamics of Growth Index in Rice

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  1. 南京农业大学农业部作物生长调控重点开放实验室
  • Received:2003-12-16 Revised:1900-01-01 Online:2005-01-10 Published:2005-01-10

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Abstract: Based on the analysis of the quantitative relationships of rice growth dynamics to varietal traits, eco-environments and planting measures, a universal knowledge model for rice was developed, which was driven by physiological development time-based cumulative temperature. The model can be used to predict the time-course dynamics of growth indices including population stem and tiller number, leaf area index and dry matter accumulation for growth guideline and diagnosis with different varieties, eco-environments and planting measures. Case studies with the data sets of normal climatic year and different variety types at different eco-sites indicated a good performance of the model system for prediction with the RMSE=5.0 for the simulated and observed population density, r=0.85** for the simulated and observed growth indices.

Key words: Rice, Physiological development time, Cumulative temperature, Growth index dynamics, Knowledge model

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