不同基因型玉米品种适宜种植密度的研究  

Research on suitable planting density of maize with different genotypes

作　　者：向英[1] 韦德斌[1] 费永红[1] 钟维[1] 李永维 李晓芝[1] 

机构地区：[1]百色市农业科学研究所/广西农业科学院百色分院,广西百色市533612 [2]靖西市农业科学研究所,广西百色市533800

出　　处：《广西农学报》2016年第1期4-8,共5页Journal of Guangxi Agriculture

基　　金：国家现代农业产业技术体系广西玉米创新团队建设项目(nycytxgxcxtd-07)

摘　　要：【目的】探讨不同基因型玉米品种在桂西南山区的适宜种植密度,为玉米的高产栽培提供参考。【方法】采用双因素裂区设计,主处理设7个密度,副处理设3个品种,调查不同玉米品种生育期、植株性状、穗部性状和产量等指标。【结果】3个玉米品种的生育期、植株性状的差异主要来自品种,受种植密度的影响较小。种植密度对不同品种的穗部性状影响不同,正大999的穗粗、穗行数和玉美头105的穗长、穗粗受种植密度的影响较大,其它穗部性状受密度的影响较小。正大999在种植密度为6.60万株/hm^2时产量最高,达8125.00kg/hm^2;正大619在种植密度为5.40万株/hm^2时产量较高,达8305.00kg/hm^2;玉美头105在种植密度为5.40万株/hm^2时产量最高,达7435.00kg/hm^2。【结论】综合产量及成本因素,平展型大穗品种正大999、中穗型品种正大619和紧凑型品种玉美头105适宜种植密度分别为6.60万株/hm^2、5.40万株/hm^2和5.40万株/hm^2。Objective：The present experiment was conducted to find out the suitable planting density for maize with different genotypes in mountain area in west-south Guangxi Province in order to provide reference for high yield cultivation of maize. Method：Two-factor split-plot design experiment was conducted to investigate the growth period, plant traits, panicle traits and yield applying seven planting densities and three varieties. Result：The results in this study showed that the growth period and plant characters of three maize varieties difference mainly came from the variety, and density is small to their influence. There have differences among the varieties of panicle traits influenced by density. In addition to ear diameter and rows per ear of Zhengda 999 and ear length and ear diameter of Yumeitou 105 greater influenced by planting density, other panicle traits were less affected by density. Zhengda 999 and Yumeitou 105 recorded the highest yield as 8125.00 and 7435.00 kg/hm2 when planted with 66000 and 54000 plants/hm2 planting density, respectively. Zhengda 619 recorded the higher yield as 8305.00 kg/hm2 when planted with 54000plants/hm2 planting density. Conclusion：Combining yield and cost factors,three maize varieties, viz, Zhengda999（flat type maize）, Zhengda 619（semi-panicle type maize） and Yumeitou 105（compact type maize） were concluded the appropriate density with 66000, 54000 and 54000 plants/hm2 planting density, respectively.

关 键 词：玉米 品种 种植密度 性状 产量 

分 类 号：F513[经济管理—产业经济]