种植密度对秋季甜玉米产量及主要农艺性状的影响

Effects of Planting Density on Yield and Main Agronomic Traits of Sweet Corn in Autumn

为了研究秋季不同种植密度对甜玉米产量及主要农艺性状的影响,以甜玉米"HZ388"为试验材料,设置每667 m^2种植3 200、3 600、4 000、4 400、4 800、5 200株6个密度处理,进行观察比较。试验结果表明:667 m^2种植4 000株时,空秆率为零,商品率、穗粗和穗粒数达到最大,分别为90.0%、4.68 cm和532.7粒;在一定范围内,667 m^2无苞叶商品鲜穗产量较大,为650.2 kg。建议在武汉及周边地区秋季甜玉米"HZ388"的适宜种植密度为667 m^2种植4 000株。

In order to study the effects of different planting densities on yield and main agronomic traits in autumn,sweet corn 'HZ388'was used as experimental material.Six density treatments of 3200, 3600,4000,4400,4800,5200 plants per 667m2 were set for comparison.The results showed that when 4000 plants were planted per 667m2,the empty stalk rate was zero,the commodity rate,ear diameter and grain number per ear reached the maximum,which were 90.0%,4.68cm and 532.7grains,respectively.Within a certain range, the yield without bracts was 650.2kg per 667m2,which was the highest.The suitable planting density of sweet corn 'HZ388'in Wuhan and its surrounding areas was 4000 plants per 667m2 in autumn.