摘要
对1993-2005年稻瘿蚊灯下虫量动态进行分析。结果表明:灯下稻瘿蚊诱集虫量与田间稻瘿蚊虫害的发生程度存在较高的关联性,可利用诱集虫量来预测预报稻瘿蚊的发生;灯下稻瘿蚊每年始见期不定,出现在第1代期的频率为38.46%,出现在第2代期的频率为13.33%,6月底至7月初的第3代期是主要的始见期,其频率为48.21%;第1、2代稻瘿蚊灯下诱集虫量通常极少,从第3代开始,灯下稻瘿蚊诱集虫量迅速增加,测报灯下稻瘿蚊诱集虫量以第3、4、5代居多,这与田间稻瘿蚊以第3、4、5代为主害代的实际危害情况相符合。
From 1993 to 2003,the observation was run on the seasonal fluctuation in numbers of Orseoia oryzae, due to the light trap. Results indicated that the injured degree of rice in the field was significantly correlated with the numbers of Orseoia oryzae from the light trap. Most of the harms to the rice were caused by the 3^rd, 4^th and 5^th generations of Orseoia oryzae. Under the light trap, the first appearance time of the 3^rd generation mostly showed in the period of the end of June to the early July. From that time, the trapped numbers rapidly increased.
出处
《华东昆虫学报》
2006年第4期284-287,共4页
Entomological Journal of East China
关键词
稻瘿蚊
灯下虫量
动态观察
Orseoia oryzae
insect numbers from the light trap
dynamic observation
