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选用吉林省14个主推玉米新品种为试验材料,采用相关分析和通径分析方法,通过其主要农艺性状与单株产量之间关系,分析高产玉米新品种产量的形成机制。结果表明,玉米棒三叶叶面积与单株产量呈极显著正相关关系;玉米根系在玉米吐丝期至蜡熟期与单株产量呈显著正相关关系;穗部性状与单株产量的相关系数从大到小依次为行粒数、粒深、出子率、穗长、百粒重、穗粗、穗行数,其中穗长、行粒数、粒深、百粒重、出子率对单株产量的重要性最大。
14 new varieties of maize introduced in Jilin Province were selected as experimental materials. Correlation analysis and path analysis were used to analyze the formation mechanism of yield of new high-yielding maize varieties through the relationship between their main agronomic traits and individual yield. The results showed that there was a significant positive correlation between leaf area and yield per plant of corn cob. There was a significant positive correlation between root area and yield per plant during corn silking stage and wax maturity stage. The correlation between panicle traits and single plant yield From big to small, the coefficients are row number, depth of grain, output rate, length of spike, weight of one hundred, diameter of spike, number of rows of spikes, including spike length, grain number, grain depth, grain weight, The most important is the yield per plant.