The different density of 2 Super High-yield Maize Varieties （ first jade 335, Zheng Dan 958 ） and 2 normal corn （ the Great Wall 799, Toungui 100） leaf growth dynamics of physiological indicators for comparison, analysis of High-yield Maize and common maize at different growth stages of function leaf growth variation and difference. The test results show that： 4 maize varieties can grow out of a number of leaves per plant is determined by its genetic type of decision, different density on differentiation of leaf number stability, there is no significant impact. Super high yield corn leaf number, speed of leaf and leaf area index is slightly higher than that of normal corn.%对不同密度下2个超高产玉米品种（先玉335、郑单958）与2个普通玉米品种（长城799、通吉100）的叶片生长动态生理指标进行观测，比较超高产玉米与普通玉米不同生育时期叶片的生长变化规律及差异。试验结果表明：4个玉米品种每株能生长出多少叶片是由其遗传型决定的，不同密度对其分化出叶片数量的稳定性，并无重大影响。超高产玉米的叶片数量，出叶速度和叶面积指数要略高于普通型玉米。
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