不同玉米品种在陇东旱塬区适应性试验初报

为筛选出适合陇东旱塬区种植的优质高产玉米品种，于2019年在甘肃庆阳对12个玉米品种的农艺性状和抗逆性(倒伏率、对茎腐病的抗性)等进行了田间比较。结果表明，供试12个玉米品种在当地均可正常成熟，生育期为128～143 d。产量以先玉1321最高，为15 400.5 kg/hm2；新玉108次之，为14 785.5 kg/hm2；兴贮88居第3位，为14 448.0 kg/hm2。在抗逆性方面，九圣禾2468、新玉108、陕单650、迪卡519、松科106、兴贮88倒伏率均为0，表现出良好的抗倒伏性；九圣禾2468、新玉108和陇单9号对茎腐病表现出良好的抗性。从农艺性状和抗性等综合考虑，新玉108、九圣禾2468和兴贮88表现最佳，适宜在陇东旱塬区种植。

Preliminary Report on Adaptability Trial of Different Maize Varieties in Longdong Rainfed Plateau

To select premium and high yield maize variety for the Longdong rainfed plateau, agronomic traits and stress resistance performance(lodging rate and resistance to stem rot) of 12 maize varieties were evaluated in field. Results showed that 12 varieties could reach maturity, growth period was between 128 to 143 d. Highest average yield, 15 400.5 kg/ha, was obtained in Xianyu 1321, followed by Xinyu 108, 14 785.55 kg/ha, and Xingzhu 88, 14 448 kg/ha. In terms of stress resistance, lodging rates of Jiushenghe 2468, Xinyu 108, Shandan 650, Dika 519, Songke106 and Xingzhu 88 were all 0, which showed ideal performance in lodging resistance. Taken agronomic traits and stress resistance performance into consideration, Xinyu 108, Jiushenghe 2468 and Xingzhu 88 achieved optimum performance which could be considered suitable for the production in Longdong rainfed plateau.