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題 名 | 葉面施用氮肥對'牛心'柿葉片生長氮含量及著果之影響=Effect of Nitrogen Applied Foliar Spray on Leaves Growth, Nitrogen Content, and Fruit Setting of Persimmon (Diospyros Kaki cv. 'Niou-Shin') |
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作 者 | 蔡巨才; | 書刊名 | 嘉義大學學報 |
卷 期 | 68 2000.02[民89.02] |
頁 次 | 頁109-123 |
分類號 | 435.395 |
關鍵詞 | 牛心柿; 葉面施氮肥; 生長; 著果; Diospyros kaki L. cv. Niou-Shin; Nitrogen; Foliar application; Growth; Fruit setting; |
語 文 | 中文(Chinese) |
中文摘要 | 調查嘉義地區14年生’牛心’柿結果枝條上葉片之含氮量,隨展葉而降低,在3月時為最高,至5至6月後趨於平穩。而非結果枝葉片含氮量比結果枝為低,在5月份最低,而後再上升。枝條含氮量,展葉開始後亦呈下降趨勢,其中非結果枝於5月時降到最低,而然後再上升,至7月時含氮量達高峰,往後再下降。但是結果枝則遲至9月後才有上升的現象。以葉面施肥方式增加氮肥,在前期(8月前),葉片含氮量並無增加現象,至8月後,處理組才有較對照組高的趨勢。 葉面施用尿素後,施用0.1%之結果枝條含氮量和施用0.2%者無顯著差異性。非結果枝氮素含量化變與結果枝相似。 葉面施用0.2%硝酸銨之效率以葉綠素含量而言較硫酸銨為高。適量的氮肥可降低落果率,在7月12日調查落果率以0.2%硝酸銨對果實落果率為 38.5%;0.1%為67.5%;0.2%硫酸銨56.5%。0.1%為63%;對照組之落果率為64%。 |
英文摘要 | The dry weight of growing leaves from non-fruiting shoots of Diospyros kaki cv. ‘Niou-Shin’ increased gradually after leaf emergence, reached a climax during June to July and declined thereafter. The dry weight from growth leaves of fruiting shoots resembled that of non-fruiting shoots. However, the mean dry weight of the apical leaves of non-fruiting shoots exceeded that of fruiting shoots. The N content of the apical leaves decreased after leaf expansions. For non-fruiting shoots, N content was both lowest at May and highest at March. In contrast, the fruiting shoots showed a decline in N content from high to low over the same period and remained stable thereafter. The shoot N content showed a prominent decline after leaf expansion. For apical non-fruiting shoots, the N content climaxed at the March and declined subsequently. In contrast, there was a gradual increase in N content in non-fruiting shoots after May. Foliar application with urea was an effective method for increasing nitrogen concentration in fruiting and non-fruiting shoot leaves. The nitrogen concentration in the treated leaves was highest at Aug. and Sep. and was lowest at Apri. The effect of 0.1% and 0.2% ammonium nitrate on the rate of fruit dropping was 67.5% and 38.5% respectively. For ammonium sulfate, these were 63% and 56.5% respectively. The fruit dropping rate of control was 64%. |
本系統中英文摘要資訊取自各篇刊載內容。