頁籤選單縮合
題名 | 臺中三號高粱黍蚜之防治適期 |
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作者 | 方敏男; 章加寶; 黃蘚; | 書刊名 | 臺中區農業改良場研究彙報 |
卷期 | 19 1988.06[民77.06] |
頁次 | 頁35-44 |
分類號 | 434.158 |
關鍵詞 | 防治; 高粱; 黍蚜; 臺中三號; |
語文 | 中文(Chinese) |
中文摘要 | 黍蚜(Melanaphis sacchari (Zehntner))為高粱重要害蟲之一,常於高粱孕 穗期至乳熟期大量發生,對於高粱之生育、產量及品質影響至鉅。根據台中三號 高粱不同生育期黍蚜族群發生消長調查結果,春作第一次出現高峰之時期為播種 後65∼80天,秋作第一次出現高峰之時期為播種後45∼60天,春作比秋作約晚 20天左右;至於出現高峰之次數,春作及秋作各有二次,並無顯著差異。根據 不同施藥間隔及次數防治黍蚜試驗結果,產量以於播種後40天至80天每隔10 天施藥一次共五次最高,比對照增產31%,但收益以於播種後50及80天各施藥 一次共二次最高,比對照不施藥處理增收益13%。為節省施藥工資及減少用藥量 與次數,建議於播種後50∼60天及80∼90天,當黍蚜族群密度達平均每株50 隻左右時為防治適期。 |
英文摘要 | Sorghum aphid is one of the most insect pests of grain sorghum. it always occurs severely from the booting to milky stage and has the effect to the growth yield and quality of grain sorghum. The results revealed that the first peak of aphids population appeared from 65th to 80th day after sowing in spring crop. while from 45th to 60th for fall crop, and it has 20 days delay for spring crop versus fall crop. The results of different interval of application and application times showed that the yield of 31% was obtained than that of check for the application of 10 days interval from the 40th to 80th day after seeding, while the benefit of 13% was obtained than that of check for one application of the 50th and 80th day, respectively. For the reduction of labor, insecticide dosage and application times, we suggest that the control timing was at the population of 50 aphids/plant from the 50th to 60th day and 80th to 90th day after seeding. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。