不同施氮量对玉米产量及各器官氮素分配的影响

Effect of Different Nitrogen Fertilizer Application on Maize Yield and Nitrogen Distribution among Organs

采用田间试验研究不同氮肥施用量下玉米产量及各器官氮素运移情况,旨在了解氮素对玉米产量的影响及氮素吸收和转运特性,为实现玉米合理施肥提供依据。试验表明,合理施用氮肥可显著提高玉米产量、增加干物质积累、提高各器官中的氮素含量;氮肥利用率常规量施氮极显著高于高量施氮者。

Field trial was adopted to study maize yield and nitrogen transportation among organs under different nitrogen fertilizer application. This study aimed at making clear effect of nitrogen on maize yield and characteristics of nitrogen uptake and transportation to supply basis for realizing proper application of nitrogen.The results showed that proper application of nitrogen can raise maize yield significantly, add dry matter accumulation, and boost nitrogen content in each organ. Nitrogen use efficiency in common application dose treatment was much higher than that of high application dose treatment.