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題 名 | 春植蔗田內甘蔗綿蚜與其捕食天敵之發生消長=Seasonal Occurrence of Sugarcane Woolly Aphid and Its Predators in Spring Cane |
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作 者 | 鄭文義; 陳先明; 王瑞圖; | 書刊名 | 臺灣糖業公司研究所研究彙報 |
卷 期 | 166 1999.12[民88.12] |
頁 次 | 頁1-18 |
分類號 | 434.718 |
關鍵詞 | 春植蔗田; 甘蔗綿蚜; 棲群消長; 捕食天敵; 氣候因素; Spring cane; Sugarcane wolly aphid; Ceratovacuna lanigera; Population dynamics; Predators; Climatic factors; |
語 文 | 中文(Chinese) |
中文摘要 | 73/74至82/83共10個年期在本所各種植一筆春植F160調查田,每年期自二~三月甘蔗萌芽整齊至次年二月採收前為止,每兩週一次以目測法調查208m²面積內每一葉片上綿蚜蟲落之長度與捕食性天敵之發生數。合計203次調查結果,平均每次每公頃出現28,062cm之蟲落長度,其密度約為秋植時之25.2%。以79/80年期之平均87,710cm最高,74/75年期之5,070cm最低。春植甘蔗萌芽後有翅綿蚜雌蟲前來產仔並定著形成蟲落,隨甘蔗之成長蟲落逐漸擴大與增長,於五月上半月達到第一個高峰,蟲落長度達162,131cm,然後隨氣溫之進一步昇高,蟲落長度逐漸減短,七月下半月至十二月上半月間蟲落長度在2,459-11,214cm間消長,十二月下半月至次年二月下半月間氣溫降低後,綿蚜棲群又復增高而出現第二個高峰,其平均蟲落長度為95,969cm。同時平均每次每公頃出現462隻食蚜螟蛾、各類瓢蟲、食蚜虻或草蛉等捕食性天敵,這些捕食性天敵隨綿蚜之出現而發生,但其盛期多出現於綿蚜發生高峰之後。又,初夏氣溫進一步昇高不利綿蚜棲群之增長,大雨後綿蚜棲群不一定減少,而強風似非影響綿蚜增減之重要因素。 |
英文摘要 | The length of sugarcane woolly aphid (Ceratovacuna lanigera Zehntner) colonies on each leaf blade occurring in a 208-m² area was determined by direct measurement at 2-week intervals in 1984/85 to 1993/94 F160 spring cane. The average colony length of 28,062 cm/ha/survey, which is about 25.2% that of F160 autumn cane, was recorded, with the highest of 87,710 cm/ha/survey found in the 1990/91 crop and the lowest of 5,070 cm/ha/survey observed in the 1985/86 crop. The alation-borne nymphs aggregated and stationed themselves on cane leaves to form a colony, which increased in length and in width, peaking at 162,131 cm/ha/survey in the first half of May and then decreased and fluctuated between 2,459 to 11,214 cm/ha/survey till the first half of December. The length of the colony increased again as the weather became cooler in December, reaching a second peak of 95,969 cm/ha/survey in February of the next year. An average of 462 predators/ha/survey, including an aphidophagous pyralid, coccinellids, syrphids, and green lacewings, were also recorded. The effects of predators, temperature, rain, and wind velocity on the development of the aphid population are discussed. |
本系統中英文摘要資訊取自各篇刊載內容。