我国北方玉米杂交种在甘肃的丰产性和稳产性分析

采用多点区域试验方法对从我国北方8省市引进的玉米杂交种作了丰产性和稳产性分析，结果表明：海禾2号、四单68、3119和3303明显优于对照杂交种中单2号；沈单10号和豫玉22的丰产性较好，但稳产性不如中单2号。

Analysis of productivity and stability of maize hybrids

It is necessary to test and analyse productivity and stability of introduced maize hybrids before they are planted in other ecological background. This paper discusses the productivity and stability of maize hybrids introduced from the north of China. The conclusions are as follows: (1) that Haihe 2, Sidan 68, 3119 and 3303 are significantly superior to Zhongdan 2 as CK; (2) that the productivity of hybrids, Shendan 10 and Yuyu 22, are better than CK, but the stability is not as good as CK. Finaly, the hybrids fitting to planting in different districts are suggested.