摘要
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 rate of fertilizer-N utilization by ginger was quite different in different applying stages. The results indicated that the rate of fertilizer-N utilization increased with the delay of application. The highest utilization rate was the fertilizer dressed at middle period of vigorous growth,which was 45. 24%;while the basal manure utilization rate was only 27. 67%. It was also shown that the nitrogen uptake from basal manure was distributed in highest level in the main shoots and leaves, the nitrogen derived from fertilizer dressed at middle period of vigorous growth was mostly distributed into rhizomes, and nitrogen absorbed from fertilizer dressed at early period of vigorous growth was distributed evenly into all organs. The reclamation rate from fertilizer dressed at middle period of growth was the highest and lowest reclamation rate was the basal manure. The content of fertilizer-N and soil-N in ginger plant was determined, it was shown 56. 57% plant-N was derived from soil-N, the remaining 43. 43% was from fertilizer-N. The nitrogen from soil played a very important role in ginger production, therefore, the problem of how to maintain high soil fertility must be paid more attention.
出处
《园艺学报》
CAS
CSCD
北大核心
1993年第2期161-165,共5页
Acta Horticulturae Sinica
关键词
姜
生姜
氮15
氮素
吸收
Ginger
Labeled N
Absorption rule of nitrogen
