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生姜对不同时期施用氮肥的利用率差异较大,本试验结果以施肥较迟的盛长中期追肥利用率最高,为45.24％,基肥的利用率最低,仅为27.67％。不同时期施入氮素在生姜各器官的分配亦不相同,基肥的氮向主茎、叶的分配相对较多,约占总吸收量的11.39％,盛长中期追肥吸收的氮素有65.44％分配于根茎中,盛长初期追肥吸收的氮素在各器官的分配界于基肥与盛长中期追肥之间。对植株氮素来源的分析表明,43.43％的氮素来源于肥料,而56.57％的氮素来源于土壤,可见,土壤氮对生姜的氮素供应有重要作用,因此,培肥地力是提高产量的重要措施。
The utilization rate of nitrogen in different periods of ginger was quite different. The results of this experiment showed that the highest rate of top dressing and fertilizer utilization was 45.24% and the lowest utilization rate of basal fertilizer was only 27.67%. Nitrogen applied in different periods had different distribution in various organs of ginger. The distribution of nitrogen to main stem and leaf in basal fertilizer was relatively large, accounting for 11.39% of the total absorption, while the nitrogen absorbed by top dressing in middle and long stages was 65.44% Assigned to the rhizomes, Sheng long early top-dressing to absorb nitrogen in the distribution of organs in the basal fertilizer and Sheng long medium-term top dressing. Analysis of plant nitrogen sources showed that 43.43% of the nitrogen came from the fertilizer and 56.57% of the nitrogen came from the soil. Therefore, soil nitrogen played an important role in supplying nitrogen to the ginger. Therefore, Important measure.