摘要
研究不同播种量对玉米农艺性状及产量的影响,为优化玉米种植密度提供科学依据。通过设置5个不同的玉米播种密度(处理A、B、C、D、E播种密度依次为50 000、55 000、60 000、65 000和70 000株/hm^(2)),在玉米成熟期,测量并对比各处理的株高、穗位高、空秆率、倒伏率、穗粗、穗长、穗粒数、出籽率、千粒质量和产量等指标。结果发现:随着播种密度的增加,玉米株高和穗位高逐渐降低,空秆率和倒伏率逐渐升高;产量因素如穗粗、穗长、穗粒数、出籽率和千粒质量等均呈现下降趋势;产量在65 000株/hm^(2)时达到最高,随后呈下降趋势。因此,适宜的种植密度可以提高玉米产量,但过高密度会导致植株生长受抑和产量下降。建议该地区玉米的播种密度为65 000株/hm^(2),以达到最佳的产量和植株健康状态。
To study the effects of different sowing rates on the agronomic traits and yield of maize,and provide scientific basis for optimizing maize planting density.Five different corn sowing densities(50000,55000,60000,65000,and 70000 plants/hm^(2))were set.During the corn maturity period,the plant height,ear height,empty stem rate,lodging rate,ear diameter,ear length,number of grains per ear,seed yield,thousand grain quality,and yield of each treatment group were measured and compared.With the increase of sowing density,the maize plant height and ear height gradually decreased,while the empty stem rate and lodging rate gradually increased.Yield factors such as ear diameter,ear length,number of grains per ear,seed yield,and thousand grain quality all showed a decreasing trend.However,the yield reached its peak at 65000 plants/hm^(2) and then showed a decreasing trend.Appropriate planting density can increase maize yield,but excessive density can lead to inhibited plant growth and decreased yield.It is recommended that the planting density of corn in this area be 65000 plants/hm^(2) to achieve optimal yield and plant health.
作者
胡星
HU Xing(Hefeng County Agricultural Technology Extension Center,Hubei Province,Enshi,Hubei 445800)
出处
《热带农业工程》
2025年第6期126-129,共4页
Tropical Agricultural Engineering
关键词
玉米
播种密度
生长
产量
corn
sowing density
growth
production volume
