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毛乌素沙区玉米农艺性状及产量的相关和通径分析
Correlation and Path Analysis of Agronomic Traits and Yield of Maize in Mu Us Sandy Area
  
DOI:
中文关键词:  品种  产量  农艺性状  相关  通径分析
英文关键词:Variety  Yield  Agronomic traits  Related  Path analysis
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作者单位
郭海红,李 强,赵 帆,张 序,封 琳,白成波,许晓瑞,屈高峰,卜 凯 (1.陕西省榆林市横山区白界区域农业技术推广站陕西 榆林 7191002.陕西省榆林市横山区农业技术推广中心陕西 榆林 7191003.陕西省榆林市横山区赵石畔区域农业技术推广站陕西 榆林 7191004.陕西省榆林市横山区石湾区域农业技术推广站陕西 榆林 719100) 
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中文摘要:
      通过对20个玉米品种农艺性状进行比较,并进行相关和通径分析,明确各性状对产量的相对重要性,为毛乌素沙区玉米产业提质增效提供依据。结果表明:(1)三北89、金科玉4号和禾盛209适宜在榆林毛乌素沙区种植和推广。(2)相关分析:产量与百粒重、行粒数、穗位高、穗行数呈极显著正相关,与倒伏率呈极显著负相关,与空秆率呈显著正相关。(3)通径分析:穗行数对产量的直接正向效应最大,行粒数对产量的直接正向效应最大,倒折率对产量的直接负向效应较大。因此,在毛乌素沙区玉米品种筛选过程中,要综合考虑,在增加穗行数、行粒数及百粒重的同时,还应加强穗位、抗倒性的选择,同时兼顾各农艺性状的相互影响。
英文摘要:
      The study compared the agronomic traits of 20 maize varieties and conducted correlation and path analysis to determine the relative importance of each trait on yield, providing a basis for improving quality and efficiency of the maize industry in the Mu Us sandy area. The results indicated that: (1) ‘Sanbei 89’, ‘Jinkeyu 4’, and ‘Hesheng 209’ are suitable for cultivation and extension in the Mu Us sandy area of Yulin. (2) Yield is significantly positively correlated with 100-grain weight, number of grains per row, ear height, and number of rows per ear, and negatively correlated with lodging rate, while positively correlated with empty stem rate. (3) The number of rows per ear exhibites the highest direct positive effect on yield, followed by the number of grains per row; meanwhile, lodging rate has the greatest direct positive effect on yield, and the discount rate has a greater direct negative effect on yield. Therefore, in the screening process of maize varieties in the Mu Us sandy area, it is essencial to consider increasing the number of rows per ear and the 100-grain weight,optimizing ear position and lodging resistance, and accounting for interactions among agronomic traits.
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