摘要:
应用灰色系统理论,对玉米杂交组合筛选中的株高、穗位高、穗长、穗粗、秃顶长、行数、行粒数、百粒质量、出籽率9个与产量相关的因素进行了分析.结果表明,玉米组合产量因素与产量的关联度由大到小依次为：行粒数＞穗长＞百粒质量＞行数＞出籽率＞株高＞穗粗＞穗位高＞秃顶长.根据综合评判值综合评价了28个玉米杂交组合的优劣,将28个玉米杂交组合分为3类, 综合表现优良的组合依次为杂交组合18、22、23、21、7、10,其中杂交组合18的综合性状最好（r′=0.913 2）;综合表现一般的组合依次为28、12、13、3、5、4、14,其中组合14的综合评价值最小（r′=0.705 0）,综合性状最差;其余组合综合表现较好.综合评判结果与生产实际中的表现基本一致.
Abstract:
According to the application of gray system theory, this paper analyzes nine production-related factors —The maize hybrid combination screening in plant height, ear length, splike length, ear diameter, barren tip length, rows per ear, grain per row, 100-grain mass, produce grain rate. The results show that the correlation of maize combination of production factors with yield was described as follows: grain per row>splike length>100-grain mass>rows per ear>producing grain rate>plant height>ear diameter>ear leagth>barren tip length. Based on the value of comprehensive evaluation, the advantages and disadvantages of 28 corn hybrids combination, which were divided into three classes, were evaluated. The overall excellent performance combination was 18,22,23,21,7 and 10, in which hybrid combination 18 performs the best traits (r′= 0.9132); combination of 28,12,13,3,5,4,14 performed the average traits. The combination 14 had the minimum value (r′= 0.705 0) and the worst comprehensive performance while the rest of combination performed better in the middle level. The results of comprehensive evaluation conform with performance in the production practice.
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