摘要
双带夜蛾是水稻常见的害虫之一 ,在湖北省一年发生 5代 ,以第五代幼虫化蛹越冬 ,翌年 4月中下旬成虫羽化、产卵 ,每年 5 9月为发生为害期 ,有世代重叠现象 ;幼虫有 6个龄期 ,第 15代各代历期依次为 4 7.95 ,2 8.15 ,2 3 .10 ,2 4 .4 7和 4 1.92天 ;该虫生长发育的最适温度为 2 2 3 0℃ ,相对湿度为 85 % 95 %。本文还记述了该虫的生活习性 ,稻田种群数量消长及天敌等情况 。
The green rice caterpillar (Naranga aenecens Moore) is one of the common rice pests. It has 5 generations each year in Hubei province. The fifth generation overwinters with pupae.Then imago emerges and lays eggs during middle and late April,and damages the rice from May to September next year. It has generations overlapping. The larvae undergo 6 instars. The duration for each generation was:the first generation 48d,the second 28d,the third 23d, the fourth 24d and the fifth 42d. The favourable temperature to its growth and development ranges from 22℃ to 30℃,and the relative humidity from 85% to 95%.This paper also deals with its life habits,fluctuation of population density in the rice fields,relationship between occurrence and environment,and its natural enemies. The proposal to control the pest has been given.
出处
《孝感学院学报》
2001年第6期47-51,共5页
JOURNAL OF XIAOGAN UNIVERSITY
关键词
双带夜蛾
生物学特性
水稻
害虫防治
Naranga aenescens Moore
biological characteristic
control
