Effects of Planting Density and Row Spacing on Yield Characters of Xianyu 335

In the north of Huanghuaihai area,summer corn Xianyu 335 was discussed using two-factor split plot experimental design under different densities(60 000 and 75 000 plants/hm2) and row spacing patterns[50 cm,60 cm,70 cm,80 cm,(80 + 40) cm] with 3 repeats.The effects of different densities and row spacing on summer corn yield related traits were analyzed.The results showed that the differences of grain yields between 60 000 and 75 000 plants/hm2 was not significant,there was significant differences in yields among treatments of row spacing.Under the density of 60 000 plants/hm2 and the row spacing pattern of 80 + 40 cm,the yield of corn was highest(11 068 kg/hm2) and significantly higher than other planting spacing patterns,which was higher than the second by 8.58%.The yield of corn was higher and had no significant difference with the first under the density of 75 000 plants/hm2 and the row spacing pattern of 60 cm and(80 + 40) cm.Under the configuration of test density and row spacing,the optimum planting pattern for summer corn Xianyu 335 in Huanghuaihai area was(80 +40) cm row spacing with 60 000 plants/hm2.