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作物产量与干物质积累过程紧密相关,各种不同的栽培措施及环境条件会显著影响干物质积累过程进而影响产量。利用2007—2009年不同地区、年份和栽培管理措施的5组田间试验资料,以玉米为研究对象,分析了干物质积累过程对产量的影响,建立了郑单958、中农大4号单株产量与其Logistic模型参数的关系模型,相关系数分别为0.863和0.993,标准误差分别为0.018和0.004。用独立验证试验对模型效果进行了t检验,郑单958和中农大4号的显著水平值分别为0.900和0.379,模型模拟值与实际观测值差异均不显著,RMSE值分别为0.015和0.020。分析结果表明,玉米产量与干物质积累过程有关,不同的干物质积累过程其Logistic方程的参数也不同;玉米籽粒产量与Logistic方程参数之间存在一定的关系,不同的品种其关系模型也有所不同。
Crop yield and dry matter accumulation process are closely related to a variety of cultivation practices and environmental conditions will significantly affect the process of dry matter accumulation and thus affect the yield. In this study, five sets of field trial data from 2007 to 2009 in different regions, years and cultivation management measures were used to study the effects of dry matter accumulation on yield. The yield per plant of Zhengdan 958 and Zhongnongda 4 was established. And its Logistic model parameters, the correlation coefficients were 0.863 and 0.993 respectively, and the standard errors were 0.018 and 0.004, respectively. Independent validation tests were used to test the model’s effect. The significant levels of Zhengdan 958 and Zhongnongda 4 were 0.900 and 0.379, respectively. There was no significant difference between the simulated and observed values, with RMSE values of 0.015 and 0.020, respectively. The results showed that the yield of maize was related to the process of dry matter accumulation, and the parameters of Logistic equation were also different in different dry matter accumulation processes. There was a certain relationship between the yield of maize and the parameters of Logistic equation, and the relationship model of different varieties was also different .