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本文根据我所1986～1993年的玉米丰歉定位试验结果初步分析得出:当地5～9月的气象因素分布状况直接影响着玉米生长发育及产量的形成.其中,6月下旬的气象因素决定营养器官的干物质,8月上旬的温度决定生殖器官的干物质.玉米干物质在拔节后对产量的贡献大于拔节前,尤其7月上旬的干物质与产量呈极显著正相关,此时的干物质可作为年成预测的依据.根据气象因素分布与产量建立三个最优数学模型,拟合结果与实际产量完全吻合.
Based on the preliminary results of the experiment on corn aplomb locating from 1986 to 1993 in our country, it is concluded that the distribution of meteorological factors from May to September directly affects the growth and yield of maize.The meteorological factors of late June Dry matter of vegetative organs, the temperature in early August, determines the dry matter of reproductive organs. The contribution of dry matter to yield after jointing is greater than that before jointing, especially in early July. There is a significant positive correlation between dry matter and yield at this time Of the dry matter can be used as the basis for annual prediction.According to the distribution of meteorological factors and yield to establish three optimal mathematical model, the fitting result is in good agreement with the actual yield.