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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 experiments were conducted to study the yield and nitrogen transport of maize under different nitrogen application rates. The aim was to understand the effect of nitrogen on the yield of maize and the characteristics of nitrogen uptake and translocation, and provide a basis for the rational fertilization of maize. The results showed that the rational application of N could significantly increase the yield of maize, increase the accumulation of dry matter and increase the nitrogen content of various organs. The N application efficiency of conventional nitrogen application rate was significantly higher than that of high N application rate.