【摘要】 为了探明控释肥在夏玉米郑单958轻简化栽培上的应用效果,采用裂区试验设计,研究金正大、施可丰和住商3种玉米专用控释肥分别在288、240和192 kg/hm~2 3个氮素用量水平的应用效果。结果表明,在相同施氮量时,施可丰的氮肥利用率高于金正大和住商肥料,住商的农学利用率和偏生产力高于金正大和施可丰肥料。综合比较氮素利用效率和产量结果,在鲁北地区的夏玉米上推荐施用住商玉米专用控释肥,推荐氮素用量为240 kg/hm~2。更多还原

【Abstract】 To explore the application effects of controlled-release fertilizers in light simplified cultivation of summer maize cultivar Zhengdan 958, a split block design experiment was carried out to study the application effect of three kinds of special controlled-release fertilizers, including Jinzhengda, Shikefeng and Zhushang, at three nitrogen use levels, 288, 240 and 192 kg/hm~2. The results showed that the nitrogen use efficiency of Shikefeng was 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/hm~2.更多还原