|Title:||氮肥濃度對百香果生長發育之影響與葉片礦物元素含量之週年變化||Other Titles:||Effects of Different Nitrogen Dosages on the Growth and Development on Fruits and Seasonal Changes of Mineral Elements in Leaves||Authors:||張哲瑋
|Keywords:||百香果;氮肥濃度;週年變化;passion fruit;nitrogen dosages;seasonal changes||Issue Date:||Jun-1990||Publisher:||臺灣園藝學會||Journal Volume:||36||Journal Issue:||2||Start page/Pages:||132-142||Source:||中國園藝||Abstract:||
氮肥濃度以15 mM處理較佳，無論地上部、根生長勢與元素含量均較5、10 mM處理組爲優。20 mM處理雖地上部生長較佳，但根生長受阻且磷、鉀、鈣等元素吸收較少，且氮素在組識中累積，可能已呈氮素過量的現象。
The effects of nitrate concentrations (5, 10, 15, 20 mM) on growth of potted passionfruit were studied. The seasonal changes of mineral elements in leaves grown in orchards at Taitung were also analysed.
Application of 15 mM nitrogen resulted in a more vigorous growth thn that of 5 or 10 mM. Nitrogen with 20 mM retarded root growth and the absorption of P, K and Ca, and meanwhile, nitrate was accumulated in the tissues. It appeared that 20mM nitrogen is excessive for the growth of passionfruit.
As passionfruit leaves increased in age, the N and P contents decreased and Ca and Mg increased. K content attained maximum when leaf almost fully expended.
The analysis of seasonal changes of macroelements in leaves showed that N, P and K contents reached their maximum in November and minimum in April. Only small difference for Ca content and no definite trend for Mg content were founded,
|Appears in Collections:||園藝系|
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