苹果黄蚜(Aphis citricola von der Goot)属同翅目,蚜科,体黄至黄绿色,尾片腹管黑色。以成虫、若虫在果树芽、叶、嫩梢反面吸食汁液为害,是河北省苹果幼树上的重要害虫。生产中多年采用氧化乐果EC进行防治,由于长期高强度地单一用药,苹果黄蚜已对氧化乐果产生了抗性。为解决生产中这一难题,特立题于1998年进行了10％英赛丰EC防治苹果黄蚜田间小区药效试验。现将试验结果报告如下: Apple aphid (Aphis citricola von der Goot) is a Homoptera, aphid subjects, body yellow to yellow-green, the tail piece of the abdomen black. In adults, nymphs in the fruit buds, leaves, young shoots the opposite side of the juice damage, apple trees in Hebei Province is an important pest. Omethoate EC has been used for many years in production to prevent and treat it. Due to the long-term high-intensity single-dose treatment, the yellow apple aphid has developed resistance to omethoate. To solve this problem in production, the special issue in 1998 conducted a 10% British race abundance EC apple yellow aphid field efficacy test. The test results are reported as follows: