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題 名 | 黑角舞蛾在臺灣中部地區的危害範圍、寄主植物及其對荔枝產量的影響=The Infested Area, Host Plants and Damage to Litchi Chinensis Yield of Casuarina Moth Lymantria Xylina (Lepidoptera: Lymantriidae) in Central Taiwan |
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作 者 | 葉士財; 廖君達; 陳慶忠; 柯文華; | 書刊名 | 臺中區農業改良場研究彙報 |
卷 期 | 94 2007.03[民96.03] |
頁 次 | 頁61-83 |
分類號 | 433.3 |
關鍵詞 | 黑角舞蛾; 危害範圍; 寄主植物; 荔枝; Lymantria xylina; Infestation; Host plants; Litchi chinensis; |
語 文 | 中文(Chinese) |
中文摘要 | 黑角舞蛾 (Lymantria xylina Swinhoe) 為害面積逐年由八卦山地區向四周擴散,2006年受威脅的鄉鎮達21個,受害經濟果樹面積達2,115.1 ha。單一鄉鎮為害度以芬園鄉最嚴重 (0.7%),其次為南投市(0.6%);縣市發生為害度5年平均彰化縣為最嚴重 (0.44%)。黑角舞蛾寄主植物達103 科424種,前12名寄主均為雜木,其中野桐、香楠、紅楠、血桐及大葉楠分佔前五名,受害等級分別為3.01 、3、3、2.97及2.94。經濟果樹以荔枝、龍眼、楊桃受害較嚴重,排名分佔第13、14、25名,受害等級分別為1.7 、1.65及1.16 ,顯示黑角舞蛾幼蟲偏好取食雜木。黑角舞蛾除了對當年危害的荔枝產量造成損失之外,亦會顯著降低隔年果實產量。藥劑防治試驗顯示,唯有在二齡幼蟲前防治,方可避免產量降低,因此,建議農民應在黑角舞蛾卵塊孵化後15天內施藥防治。 |
英文摘要 | The casuarina moth, Lymantria xylina Swinhoe, expanded their infestation area that radiated from the Bagua Mountain year by year. The total infested area of commercial fruit crops in 21 townships of central Taiwan was up to 2,155.1 ha. Among the 21 townships, Fen-Yuan Township had the highist damage rate (0.7%), followed by Na-tou City, the damage rating was 0.6. Changhua County was the most infested area of all three counties, the damage rating up to 0.44% in 2005. The host plants of Lymantria xylina included 424 species, 103 families. The former 12 species were all non-commercial hardwoods. The top five infested plants were Mallotus japonicus, Machilus zuihoensis, Machilus thunbergii, Macaranga tanarius and Machilus japonica var. kusano, each damage rating was 3.01, 3.0, 3.0, 2.97 and 2.94, respectively. The damaged ranks of commercial fruit crops Litchi chinensis, Euphoria longana, and Averrhoa carambola were 13, 14 and 25, and the damage rating was 1.7, 1.65 and 1.16, respectively. These results showed that the larvae of Lymantria xylina preferred to feed on noncommercial hardwoods. Lymantria xylina not only caused the yield loss of Litchi chinensis in the first year but also affected the yield in the following year. Therefore, we suggested that farmer should apply insecticides within 15 days after egg hatching to avoid the yield loss of Litchi chinensis. |
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