應用性費洛蒙於水稻二化螟蛾族群之發生偵測與預測
Other Title
Monitoring and forecasting of rice stem borer, Chile suppressalic (Walker) based on the sex pheromone trap catches
Journal
植物保護學會會刊
Journal Volume
42
Journal Issue
3
Pages
201-212
Date Issued
2000-09
Date
2000
Author(s)
鄭清煥
Ching-Huan Cheng
Abstract
水稻二化螟蟲(Chilo suppressalis (Walker))為水稻重要害蟲之一，偵測其成蟲族群之發生動態及發生期興發生量，為決定防治適期以及需否防治之重要依據。根據1991至1999年使用性費洛蒙及誘蟲燈在田間誘殺二化螟蛾之結果顯示，兩種方式綱捕蟲數之消長趨勢頗為一致，惟性費洛蒙較誘蟲燈更能有效地偵測二化螟蛾之發生動態，尤其在族群密度較低之越冬世代及第一世代成蟲，誘捕蟲數平均較誘蟲燈分別高達6.9及2.5倍。按性費洛蒙在田間誘捕資料，二化螟在嘉義地區基本上一年發生五個世代，一、二期稻分別可遭受三及二個世代之幼蟲危害，世代重疊發生，在一期稻期間之發生密度極明顯高於二期稻。一、二期稻間之空田期及二期稻發育初期之高溫、驟雨為影響其族群在二期稻增長之重要因素。使用有效積溫法則估算各世代成蟲出現高峰期，並不能完全符各世代成蟲之實際出現期，但越冬世代及第一世代成蟲出現高峰期分別與其前一世代成蟲出現高峰期及12月至2月及2月至4月之日平均積溫具密叨關係(r2值分別大於0.68及0.97)：而兩世代成蟲發生量均與其上一世代之發生豐度之關係最為密切(r2值分別大於0.68與0.85)，成蟲出現期之降雨量則對發生量具若干程度之負面作用，利用逐步迴歸分析已建立若干方程式可供越冬世代及第一世代二化螟蛾之發生期及發生量之預測。
The rice stem borer (Chilo suppressalis (Walker)) has gradually resumed its importance in rice insect pests in Taiwan since the years of 1980. Occasionally, it could cause severe damage on rice sporadicically. Monitoring of its population dynamics and forecasting of the time and amount of adult emergence become importance in determination of control needed. Based on the data collected with the sex pheromone traps and the suction light traps in paddy fields from 1993 to 1999 at Chiayi . it showed that the pheromone trap was more efficient than the suction light trap in monitoring of the population of rice stem borer though the fluctuating trend of adult catches with both methods were quite coincident The catches with the pheromone trap were 6.9 and 2.5 times greater than that of suction light trap while the adult population were low in the overwintered and the first generation, respectively. But such differences became negligible or adverse as adult population was high in the second generation. The stem borer basically occurred five generations a year with three generations in the first cropping season and two generations in the second cropping reason. The adult population in the fast cropping season was markedly higher than the seconds’. Disruption of the habitat between the cropping seasons and high temperature and heavy rainfall in the early growing stage of rice in the second cropping season were the factors to limit the population in the second cropping season. The total effective temperature was not reliable to determine the emergence peak of adults for all generations, but it could be predicted with the period of the emergence peak of the preceding generation and the accumulative averaged daily temperature from December to February and from February to April for the overwintered and the first generation, respectively. One the other hand, the adult population abundance of the overwintered and the first generation were highly correlated with its preceding generation. Several predicting equations had been developed fin forecasting the time and amount of adult emergence in this study for further inspect of their applicability and reliability.
Subjects
二化螟
性費洛蒙
族群偵測
發生預測
rice stem borer
sex pheromone
population monitoring
forecasting of adult emergence
Publisher
植物保護學會
Type
journal article
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