Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/81470
標題: 木瓜營養缺乏症狀調查研究
A Study of Mineral Deficiency Symptoms of Carica Papaya, L.
作者: K. C. Lee
李國權
S. L. Lin
S. L. Lou
H. L. Lin
林深林
劉順禮
林慧玲
關鍵字: Mineral Deficiency;木瓜;Papaya;Symptom;營養缺乏;症狀
Project: Horticulture NCHU, Volume 11, Page(s) 29-38.
興大園藝, Volume 11, Page(s) 29-38.
摘要: 
為說明木瓜營養狀況,本實驗利用水耕法,分期建立要素之個別缺乏症狀,並拍照紀錄。提供果農簡易分辨法,迅速測定養分供應情況,隨時改進肥培管理。結果如下:
(一)缺氧:植株矮小。葉片黃化(下位葉首先發生)。
(二)缺磷:植株生長緩慢、矮小、葉片暗綠易脫落,根部色素有累積現象,呈深粉紅色。
(三)缺鉀:葉邊緣組織壞死,呈波狀,有向內捲之趨勢。
(四)缺鈣:新葉邊緣壞疸,頂芽生長受到抑制,根部有腐爛現象。
(五)缺鎂:葉脈間葉肉黃化,後期葉邊緣枯萎,病症首先出現在下位葉。
(六)缺鐵:初期幼葉邊緣黃化,然後擴展到整個葉表面,葉脈保持綠色。
(七)缺硼:頂端葉片小而厚,,邊緣稍有壞疸,頂芽生長停頓,後期有壞死現象,,植株矮化。
目視診斷快速變捷,如不能單獨以症狀判斷時,可配合養分速測法(Rapid tissue test)、養液供應法(Nutrient application method),則更能明確了解植物體之營養狀況。

simple and quick method of nutrient determination, which was also a necessary step toward a wiser and improved fertilizer management.
The results of the experiment were as follows:
1. Nitrogen deficiency:
The affected plants were short with chlorosis appearing early on the lower leaves.
2. Phosphorus deficiency:
Plants suffered a great decline in growth rate and, therefore, were short. Their leaves were dark-green and fell off easily. The roots were pink to deep-red in color due to the accumulation of pigments.
3. Potassium deficiency:
Necroses was evident in tissues at the edge of the leaves which gave the leaves a wavy look and a tendency to curl inward.
4. Calcium deficiency:
Necroses occurred in marginal tissues of the terminal leaves. The growth of the terminal buds was suppressed, root rot was extensive.
5. Mangnesium deficiency:
Intervainal chlorosis was the general symptoms which first appeared on the lower leaves. In late stage, leave margins began to wilt.
6. Iron deficiency:
In early stage, chlorosis of the leave margins was evident, and then it spreaded to the entire leave. However, the veins of leaves remai
URI: http://hdl.handle.net/11455/81470
ISSN: 0255-5921
Appears in Collections:第11期
園藝學系

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