Studies on the Effects of the Plant-densities to Different Genotype Maize Hybrids II.Studies on the Effects of the Plant-densities to Major Agronomy Characters of Different Genotype Maize Hybrids

The paper studied on the effects on the plant-densities to main agronomic characters of different genotype maize varieties.The conclusions were that plant and ear height and row number difference mainly came from the variety,the density is small to their influence.when research density effect this three characters may not be the key examination;Ear long,ear diameter,row kernel difference although mainly came from the variety,but density effect enlarged,when research density effect this three characters should be suitable examined;The lodging percent,the no ear rate,ASI,barren tip length is heavily influenced by the density.When research density effect they should be mainly examined,and they may be the appraisal standard for the variety bear to density.