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Models of Dry Matter Production and Yield Formation for the Protected Tomato

文献类型： 外文期刊

作者： Chen, Yuli 1 ; Zhang, Zhiyou 1 ; Liu, Yan 2 ; Zhu, Yan 1 ; Cao, Hongxin 2 ;

作者机构： 1.Nanjing Agr Univ, Coll Agron, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Res Ctr Digital Agr, Inst Agr Econ & Informat Engn, Nanjing 210014, Peoples R China

关键词： protected tomato;dry matter production;yield formation;biomass;economic coefficient;models

期刊名称：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE V, PT I

ISSN： 1868-4238

年卷期： 2012 年 368 卷

页码：

收录情况： SCI

摘要： [Objective] In order to quantify the yield formation of protected tomato, [Method] the field experiments on varieties and fertilizer were conducted in 2009 and 2010, and cultivars: (B1) American mole 1 (early maturing), (B2) Chaoshijifanqiedawang (late maturing), and (B3) American 903 (medium maturing) were adopted; The models of dry matter production and yield formation for protected tomato were built by analyzing the relationships between yield and the number of fruit letting and the mean fruit weight, between yield and biomass and the economic coefficient at harvest, and between the mean fruit weight and economic coefficient and biomass of different varieties and fertilizer levels in accordance with the theory of yield formation. Independent experiments data was used to validate the models. [Result] The results showed that root mean squared error (RMSE), mean absolute error (X-de), and the determined coefficient (R-2) between the simulated and measured values of dry matter production was 363.135kg/ha (n=63), 79.016kg/ha, and 0.900, respectively, and RMSE, X-de, and R-2 between the simulated and measured values of yield based on yield components was 186.842g per plant (n=36), -1.069g per plant, and 0.854, respectively, and RMSE, X-de, and R-2 between the simulated and measured values of yield based on economic coefficient was 137.302g per plant (n=27), 21.170g per plant, and 0.785, respectively. [Conclusion] It indicated that the dry matter production and yield formation under different varieties and fertilizer levels for protected tomato could be well simulated by these models.

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