试验选用在中国西南地区有代表性的中国和美国玉米品种各2个,测定其茎秆强度与弹性、根系拉力、叶片持绿度等参数.结果表明,DK007抗倒性最好,渝单8号、先玉508次之,登海11抗倒性较差；2个美国玉米品种在茎秆强度、入土根数、持绿度上优于2个中国玉米品种,差异达到显著水平,而在茎秆弹性上稍逊于2个中国玉米品种;持绿度与入土根数、根系拉力呈显著相关.%Two representative maize varieties of southwest China and America were planted, respectively, and the stems strength, stems elasticity, uproot power, stay-green degree and other parametes were valuated. The results showed that the lodging resistance traits of DK007 was the best, while Yudan No.8, Pioneer 508 were middle level, and Denghai 11 was poorest. Representative maize of America had higher stems strength, more root number, better stay-green of leaf than representative maize of southwest China. But representative maize of America had less lower elasticity. Stay-green degree was positively related with the number of buried root and uproot power into significant correlation.
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