Abstract: A split block design experiment was carried out to study the application effect of three kinds of controlled-release fertilizer, including Jinnzhengda, Shikefeng and Zhushang, on summer maize cultivar Zhengdan 958, according to set three nitrogen amout levels of 288 kg/hm², 240 kg/hm² and 192 kg/hm². The results showed that the nitrogen use efficiency of Shikefeng was equal or higher than that of Jinzhengda and Zhushang, and the agronomical efficiency and partial productivity of Zhushang were higher than those of Jinzhengda and Shikefeng at the same nitrogen application rate. The application of special controlled-release fertilizer Zhushang was recommended on summer maize in the northern part of Shandong province, and the recommended amount of nitrogen was 240 kg/hm².

Key words: summer corn （Zea mays L.）, controlled-release fertilizer, application effect