临海城郊甜菜夜蛾种群发生规律研究  

Study on population dynamics of beet armyworm in the suburbs of Linhai city,Zhejiang Province,China

作　　者：王永才 汪恩国 王会福[3] 

机构地区：[1]浙江省临海市农科所,浙江临海317000 [2]浙江省临海市植物保护站,浙江临海317000 [3]浙江省台州市农业科学研究院,浙江临海317000

出　　处：《浙江农业学报》2014年第3期760-763,共4页Acta Agriculturae Zhejiangensis

基　　金：台州市科技计划项目(021201)

摘　　要：为了揭示甜菜夜蛾种群数量年度变动规律与季节性消长规律,2002—2012年在临海城郊蔬菜基地应用性诱剂监测办法进行定点系统监测。结果表明：11年来甜菜夜蛾种群年序变化呈自高向低螺旋式波动曲线,大发生频率45.5%;其季节性时序变化呈＂W＂型曲线,始蛾期年度之间差异大,早发年份在4月上旬,迟发年份在6月上旬,大多为4月底5月初。在5月上中旬有的年份出现初夏小高峰,整体高峰期在7月上旬至8月下旬,在11月上旬有的年份也出现秋末小高峰,终蛾期一般在12月上旬,个别年份在12月下旬。气温因子建模结果显示,田间发蛾的起点区点温度为旬平均气温12～14℃,当旬平均气温处在18℃以上时随气温升高而增加,当旬平均气温处在28～30℃时达到高峰。In order to explore the occurrence characteristics and seasonal population variation of beet armyworm in suburb vegetable bases in Linhai city,population dynamics of beet armyworm was systematic monitoring using sex pheromone traps during 2002—2012. The results showed the trend of the beet armyworm population variations was in spiral wave curve from high to low,and annual outbreaking frequency was 45. 5%. Seasonal population varied in a W-shape curve in general. First moth occurred in different years,from early April to early June. An early summer peak may appeared in early May,while a late autumn peak may appeared in early November in some years. The biggest population appeared arranging from early July to late August. The last moth appeared on early December generally. Amount-climate model indicated first moth appeared when average ten-day temperature between 12-14℃,and above 18℃ the amount increased as the average ten-day temperature increased till 30-32℃. This research could help to make better forecast and control decision for beet armyworm.

关 键 词：城郊蔬菜 甜菜夜蛾 季节性消长 气温因子 

分 类 号：Q969[生物学—昆虫学]