种植密度对不同品种玉米的影响  

Effect of Planting Density on Different Maize Varieties

作　　者：字天兰 Zi Tianan(Xingfu Agriculture Rural Service Center,Yunxian 675801,Yunnan,China)

机构地区：[1]云县幸福镇农业农村服务中心,云南云县675801

出　　处：《农业技术与装备》2023年第9期162-163,共2页Agricultural Technology & Equipment

摘　　要：玉米的产量和品质受到多种影响。以川单99、正大719和正大811这3个玉米品种为研究对象,通过不同种植密度(6.50×10^(4)株/hm^(2)、7.25×10^(4)株/hm^(2)和8.00×10^(4)株/hm^(2))对玉米穗粒数、穗数、千粒质量和产量的影响试验,发现玉米种植密度由6.50×10^(4)株/hm^(2)增加至8.00×10^(4)株/hm^(2)时,相同品种玉米的穗粒数、千粒质量和穗数均呈减少趋势;随着玉米植株种植密度的增加,不同玉米品种的产量均呈上升趋势。通过空秆率和单株产量评价不同品种玉米植株品质指标,发现不同玉米品种随着玉米种植密度的增加,空秆率均随之增加,单株产量均随之降低。The yield and quality of maize are affected in many ways.Three maize varieties,Chuandan 99,Zhengda 719 and Zhengda 811,were selected as the research objects.The effects of different planting densities(6.50×10^(4) plants/hm^(2),7.25×10^(4) plants/hm^(2) and 8.00×10^(4) plants/hm^(2))on the number of grains per ear,ear number,thousand grain quality and yield of maize were tested.It was found that when the planting density of maize increased from 6.50×10^(4) plants/hm^(2) to 8.00×10^(4) plants/hm^(2),the number of grains per ear,thousand grain weight and ear number of maize of the same variety showed a decreasing trend.With the increase of planting den‐sity of maize plants,the yield of different maize varieties showed an increasing trend.It was found that with the increase of maize planting density,the empty culm rate and yield per plant increased and the yield per plant decreased.

关 键 词：玉米 钾肥 产量 品质 

分 类 号：S513[农业科学—作物学] S352.3