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本项研究以通径分析方法,分析判明产量构成因素的主次关系。结果表明,掖单2号品种在河南省高产栽培中,穗粒数、亩穗数、千粒重分别为第一位第二位、第三位的重要因素。在河北省种植的京早7号,冀单3号等早熟品种,千粒重是构成产量的第一位的因素,京早7号产量水平自七、八百斤至千斤以上,千粒重也是构成产量的主要因素。因此,河北省夏播玉米高产栽培从产量构成因素看来,当前推广的品种,应以粒重为进一步提高产量的主攻方向。
In this study, the path analysis method was used to analyze the primary and secondary relationships of yield components. The results showed that Yedan No.2 variety was the second and third important factor in the high yielding cultivation in Henan Province, respectively. The early maturing varieties such as Jingzao 7 and Ji Dan 3 planted in Hebei Province are the first factors that make up the grain yield. The yield of Jingzao 7 is from seven to eight kilos, and the thousand-grain weight also constitutes the output major factor. Therefore, summer sowing of Hebei Province, high-yielding cultivation of corn production factors from the production point of view, the current promotion of varieties, grain weight should be to further increase the yield of the main direction.