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Studies on the Dynamic Simulation Models for Growth of Super Hybrid Rice Seedings

Author: ZhouXinYue
Tutor: ZouYingBin
School: Hunan Agricultural University
Course: Crop Cultivation and Farming System
Keywords: Super Hybrid Rice Growth model Simulation model of the growth period Leaf age simulation model Model Checking
CLC: S511
Type: Master's thesis
Year: 2010
Downloads: 23
Quote: 0
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Abstract


Agricultural information technology is an emerging field of science With the development of agricultural science and information technology , crop growth simulation is a hot research in the field of Information Technology in Agriculture . Past 20 years , the crop simulation has made ??tremendous development , after the process of conceptual model from a qualitative to quantitative simulation model , and has been successfully applied to production practice . In this study, the super hybrid rice growth and development of the whole process -based , reference to the large number of domestic and outside the crop growth simulation results of the research , the initial establishment of super hybrid rice growth simulation model . The choice of Hunan Province has representative the three super hybrid rice varieties Xiangliangyou of 68, the 819 of Zhuliangyou 02 and Zhuliangyou in the ningxiang region field trials , experimental data for the determination of model parameters and model validation . The model include : ① growth period model ; ( 2 ) leaf stage model . The results of this study are as follows : 1. The rice growth forecast is the basis of crop simulation . In this study, based on features and characteristics of the model of the growth period of rice quantitative description of super hybrid rice growing process . Fully taken into account in the model of super hybrid rice vegetative growth of photosensitive and temperature sensing , unconstrained nonlinear programming step acceleration method to determine the model parameters . Validate the model , the absolute error is generally less than 3d, simulation results will be ideal . 2 . Rice varieties and air temperature on leaf emergence of super hybrid rice leaf age model . Involved in the establishment of super hybrid rice leaf stage model fewer varieties parameters and meteorological data to improve the usefulness of the model . The models were tested , leaf age of the measured value and the analog value difference is less than 1 -leaf stage .

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CLC: > Agricultural Sciences > Crop > Cereal crops > Rice
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