种植密度对早熟春玉米南北73农艺性状及产量的影响

Effects of Planting Density on Agronomic Traits and Yield of Early Spring Maize

以早熟玉米杂交种南北73为试验材料,在6种不同种植密度条件下,研究了种植密度对南北73玉米品种农艺性状及产量的影响。结果表明:南北73玉米品种的产量随着种植密度的增加是先增后减,在每亩密度为5500株时产量最高,达到了501.9 kg/亩;株高、穗位随着密度的增加而增加,百粒重、单穗粒重随着密度的增加而减少,单株产量明显降低。

The effects of planting density on agronomic traits and yield of early maturing maize hybrid North-South 73 were studied under six different planting density conditions.The results showed that the yield of 73 maize varieties increased first and then decreased with the increase of planting density.The yield reached the highest when the density was 5500 plants per mu,which reached 501.9 kg/mu.The plant height and panicle position increased with the increase of density,the 100-grain weight and the grain weight per panicle decreased with the increase of density,and the yield per plant decreased significantly.