合欢羞木虱在东营的发生及化学防治试验

Occurrence and chemical control of Acizzia jamatonica in Dongying

在合欢羞木虱生物学观察的基础上,开展室内外化学药剂防治试验.结果表明,合欢羞木虱在山东省东营市1 a发生2～3代,成虫寿命15～17 d,世代重叠较明显,发生期从5月中下旬至11月上中旬.若虫5龄,在室温27～28℃时,卵孵化历期约4.7d,孵化率70％左右.8月中下旬和9月中旬各有1次明显的危害高峰期.3％高渗苯氧威（百壳矢）EC 2000,2500倍液、40％杀扑磷EC1000倍液或10％吡虫啉WP 1500,2000倍液防治效果较好,可在生产中应用推广.

Acizzia jamatonica has 2 or 3 generations a year in Dongying and occurrs from mid May to mid November. The longevity of the adult is 15-17 days. The generations overlap. The nymph has 5 in- stars. The hatching period is about 4. 7 days and hatchability is about 70% at 27-28 ℃ in lab,A peak of damage occurs in mid and last ten days of August and mid September respectively. The control effects of high permeation fenoxycarb 3% EC 2000,2500 times,methidathion 40% EC 1000 times or imida- cloprid WP 1500,2000 times are better.