利用17个玉米杂交种通过对7个穗部性状与产量进行相关和通径分析,结果表明:结实长、出籽率、穗长、行粒数、穗行数、千粒重与产量的相关系数均为正值且较大;出籽率、结实长、千粒重、穗粗、穗长对产量的直接通径系数也为正值且较大.因此,对产量影响较大的因素有出籽率、结实长和千粒重,提高出籽率和千粒重,增加结实长兼顾其它穗部性状是玉米高产的有效途径。

Correlation analysis and path analysis of maize yield and 7 major ear characteristics were made in 17 maize hybrids. The results indicated that the interelation coefficients with length of the ear with kernel，producedgrain percentage，ear length，kernels per row，rows per ear，1000-grain weight showed positive value and more great-ly than the other. The results of path analysis indicated that the most directly path coefficients to the yield is fromproduced grain percentage，the following is length of the ear with kernel，1000-grain weight，ear diameter and earlength Therefore the bigger influencing factors to the yield are shelling percentage，length of bearing kernel and1 000-grain.