株高差异对玉米初级产比试验产量结果影响的研究

Study on Effects of Plant Height Difference on Yield of Maize in Primary Experiment

初级产量比较试验中,某组合的株高与相邻组合株高存在明显差异时,会对其初比产量产生较大影响,初级产量比较试验不能客观地反映该组合的真实产量水平。以8个玉米组合为试验材料,利用相对株高和相对产量形式,研究了初比试验中某组合株高与相邻组合株高有差异时,对产量结果的影响。结果表明:在一定范围内,相对产量与相对株高可用直线回归拟合。本研究中,相对产量(y)对相对株高(x)的回归方程为y=1.72x-0.74。

The yield would be greatly influenced when the plant height of one cross combination was great different from its neighbors in primary yield experiment,which would not reflect the true yield of the combination.The effects of plant height difference on yield of maize in primary experiment were studied.The results showed that the relative yield and relative plant height could be described by line relation.The line regression equation of relative yield（y） according to relative plant height（x） was y=1.72x-0.74.