种植密度对鲜食玉米彩甜糯168产量和主要性状的影响

Effects of Planting Density on Yield and Main Traits of Fresh Maize Caitiannuo 168

[目的]探索鲜食玉米新品种彩甜糯168的适宜种植密度。[方法]以鲜食玉米彩甜糯168为材料,进行移栽密度试验,研究不同密度对玉米产量和主要性状的影响。[结果]随着密度提高,彩甜糯168产量先增加后减少,株高、穗位高逐渐增高,穗长、穗粗变小,秃尖变长,每穗行数、每行粒数变小,生育进程有不同程度提早。46 500株/hm^(2)处理产量最高,为15 771.30 kg/hm^(2),其次是42 000株/hm^(2)处理,42 000株/hm^(2)和46 500株/hm^(2)处理株高、穗位高中等,穗粒性状表现较优,生育期较为适宜。[结论]建议生产上彩甜糯168种植密度以42 000~46 500株/hm^(2)为宜。

[Objective]The aim was to explore the suitable planting density of new fresh maize variety Caitiannuo 168.[Method]With fresh maize Caitiannuo 168 as material,the transplanting density experiment was carried out to study the effects of different densities on maize yield and main characters.[Result]With the increase of planting density,the yield of Caitiannuo 168 increased first and then decreased,the plant height and ear height increased gradually,the ear length and ear diameter became smaller,the bald tip became longer,the number of rows per ear and the number of grains per row became smaller,and the growth process was earlier in varying degrees.The yield of the treatment with 46500 plants/hm^(2) was the highest,which was 15771.30 kg/hm^(2),followed by the treatment with 42000 plants/hm^(2).The plant height and ear height of the treatment with 42000 plants/hm^(2)and 46500 plants/hm^(2) were high,and the ear and grain traits were better,and the growth period was more suitable.[Conclusion]It is suggested that the planting density of Caitiannuo 168 should be 42000-46500 plants/hm^(2).