女贞白蜡蚧的药剂防治适期预测

Appropriate Period for Chemical Control of Ericerus pela

为准确掌握女贞白蜡蚧第1代若虫在大连地区的发生时期,研究了白蜡蚧第1代若虫的初发生期和当地气温、积温的关系,以期为女贞白蜡蚧防治适期预测提供依据。结果表明:大连地区地旬均温20～23℃,自女贞萌芽展叶后的积温达到933.9～1 588.9℃时是药剂防治女贞白蜡蚧第1代若虫的关键时期。

Ericerus pela is very harmful to the local Glossy Privet, the first generation larva of Ericerus pela is an important chemical control period. In order to accurately forecast the appropriate control period,the relation between the first generation of Ericerus pela and local temperature were studied. The results showed that the period with local average temperature 20-23℃ or thermal summations of 933. 9-1 588. 9℃ after Glossy Privet germinating was a critical period of chemical control to the first generation larva of Ericerus pela.