摘要： 选取3个代表性的玉米品种研究茎秆性状与倒伏的关系。结果表明:倒伏性与种植密度、茎秆拉力、茎秆穿刺力、茎粗、株高和穗位具有极显著相关性;与气生根层数具有显著相关性;密度、穿刺力、茎粗和穗位是影响茎秆倒伏的主要直接因素,可以作为衡量玉米倒伏的指标。

关键词: 玉米, 拉力, 穿刺力, 倒伏, 相关分析, 通径分析

Abstract: Three maize hybrids that utilized widely on maize production in China were chosen as the materials for the study on correlation between stem characters and lodging resistance. The result indicated that: the planting density,stem pull,stem puncture strength,stem diameter,plant height and ear height were significant relationship with lodging resistance at 0. 01 level; the support root numbers was significant relationship with lodging resistance at 0. 05 level. Planting density,stem puncture strength,stem diameter and ear height were the principal direct factors for variety lodging resistance. They could act the target for variety lodging resistance.

Key words: Maize(Zea mays, L. ), Pull, Puncture, Lodging resistance, Correlation analysis, Path analysis

中图分类号: 

• S513.03