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題 名 | 春植甘蔗節間數與螟害節間數之發生消長=Occurrence of Internodes and Borer-Damaged Internodes on Spring Cane |
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作 者 | 鄭文義; 王瑞圖; 陳先明; | 書刊名 | 臺灣糖業研究所研究彙報 |
卷 期 | 158 1997.12[民86.12] |
頁 次 | 頁15-29 |
分類號 | 434.718 |
關鍵詞 | 春植甘蔗; 節間; 螟害; 黃螟; 條螟; 二點螟; 發生消長; Spring cane; Internode; Borer damage; Argyoploce schistaceana; Proceras venosatus; Chilotraea infuscatella; Seasonal occurrence; |
語 文 | 中文(Chinese) |
中文摘要 | 自73/74至82/83共10個年期在本所農場各設置一筆春植F160調查田,自甘蔗萌 芽整齊至採收前,每兩週一次自10畦變動調查畦(畦長8m,畦寬1.3m)上,各取 3支合計30支蔗莖,調查節間數與各種蔗螟為害節間數之消長。結果在割取之5,970支 蔗莖有4,511支出現節間,其中1,675支包括16支枯心被不同蔗螟食害。節間係自四月 下半月開始出現,並隨甘蔗之生長而逐漸增多,至採收前平均每支蔗莖約有20.25個節 間。 在出現節間之4,511支蔗莖上,共計數到53,385個節間,其中3,295個螟害節 間,節間螟害率為6.18%,以黃螟為害節間數最多佔46.1%,二點螟之33.8%次之, 然後為條螟之19.7%,紫螟與白螟之為害節間數僅分別為12與2個。黃螟為害節間在 六月上半月以前未見出現,六月下半月至八月上半月間為害數不多,八月下半月起急 速增多至十一月下半月,十二月以後平均每支蔗莖有0.667-0.796個黃螟為害節間。六 月上半月開始出現條螟為害節間,七、八月間明顯增多,九月至採收前之成蔗上,條 螟為害節間數維持在每支蔗莖0.158-0.278個。二點螟為害節間亦於六月開始出現,然 後逐漸增多至十一月以後達到最高峰,平均每支蔗莖有0.346-0.421個;73/74至77/78 前五個年期二點螟為害節間數較78/79至82/83後五個年期為少,與調查田內二點螟 卵、未被寄生卵以及二點螟枯心發生數情形相符。至於紫螟與白螟則甚少為害節間。 |
英文摘要 | Biweekly surveys of spring cane were made from 1984-94 to sudy the seasonal occurrence of internodes and those damaged by different borer species at the Taiwan Sugar Research Institute Experimental Farm. In each survey, 3 stems each were randomly selected from 10 randomly selected rows. The stems wer split longitudinally and the number of internodes and those damaged by each borer species were determined. Of the 5,970 stems sampled, 4,511 formed internodes, and 1,675 of them, including 16 dead hearts, were damaged by borers. The internodes started to appear in the last half of April and increased in number with the cane growth, and reached 20.25 internodes/stem by harvest. Of 53,385 internodes which appeared on 4,511 stems, 3,295 (6.18%) were found damaged by borers:1, 520(46.1%) by Argyroploce schistaceana, 1,114(33.8%)by Chilotraea infuscatella, and 649 (19.7%) by Proceras venosatus, while only 12 and 2 internodes were damaged by Sesamia inferens and Scirpophaga nivella, respectively. The number of internodes damaged by A. schistaceana was very low before the last half of June, then increased rapidly from the last half of August towards November. After December, averages of 0.667-0.796 internodes per stem were found damaged by this borer. The internodes damaged by P. venosatus appeared in the first half of June and significantly increased in number during July and August. Not many damaged internodes were noted thereafter, and averages of 0.158-0.278 internodes per stem were damaged by this borer before the harvest. The internodes damaged by C. infuscatella also appeared in June and increased its number till November, causing 0.346-0.421 damaged internodes per stem harvesttime. On the other hand, very few internodes were damaged by either S. inferens or S. nivella. |
本系統中英文摘要資訊取自各篇刊載內容。