Abstract: Maize hybrids of excellent local varieties such as the existing local germplasm “Shouyang Xiaohuang”,“Heshun Xiaoyujiao”,“Yushe Yellow Kernel Maize” and “Zuoquan Yellow White Kernel” were used as experimental materials. The effects of different fertilization rates on plant height and stem diameter at seedling and jointing stages,plant height and ear height at maturity,and yield of hybrid maize were analyzed. The results show that the application of organic fertilizer has significant effects on plant height,stem diameter,ear height at each stage of maize,and also on the final yield of maize. The average yield increase of the fertilization group is more than 50% compared with the non fertilization group. 225 kg/hm² of organic fertilizer is the optimal amount.

Key words: maize, hybrid, organic fertilizer, yield