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对吉林省3个不同玉米生态产区(乾安县、公主岭市和桦甸市)开展田间试验,将2005~2014年6个玉米品种、3个种植密度所产生的试验数据和Logistic模型相结合,同时加入品种参数以构建产量模型。试验结果表明,所建立的综合多品种的产量模型决定系数达0.8以上,独立样本的模型模拟值和实测值差异不显著(P>0.05)。玉米收获指数(HI)与干物质积累内禀生长率(特征参数c)存在线性关系,品种参数v_1~v_2为无单位无量纲线性参数,且v_1介于0.209~0.780,v_2介于-0.036~0.028,v_1~v_2存在较大差异。引入的品种参数是基于多年多点多因素的田间资料,能较好反映不同品种间对干物质积累过程变化的产量响应机制,v_1~v_2可作为品种产量性状的遗传参数。
Field experiments were conducted on three different maize ecological producing areas in Jilin Province (Qian’an County, Gongzhuling City and Huadian City). The experimental data from 6 maize varieties and 3 planting densities from 2005 to 2014 were combined with Logistic model. At the same time adding variety parameters to build a yield model. The results showed that the coefficient of determination of the comprehensive multi-species yield model was over 0.8, and there was no significant difference (P> 0.05) between the simulated and independent values of independent samples. There was a linear relationship between the harvest index (HI) of corn and the intrinsic growth rate of dry matter accumulation (characteristic parameter c). The parameter v_1 ~ v_2 was unitless dimensionless linear parameter with v_1 ranging from 0.209 to 0.780 and v_2 ranging from -0.036 ~ 0.028, v_1 ~ v_2 there is a big difference. The introduced variety parameters are based on multi-factor and multi-factor field data for many years, which can better reflect the yield response mechanism of different varieties to dry matter accumulation process. V_1 ~ v_2 can be used as genetic parameters of yield traits.