栗大蚜属同翅目蚜科，又名黑大蚜，是为害板栗新梢、嫩枝、叶片的重要害虫之一。近两年在我县红壤开发项目区板栗园发生严重，造成很大损失，果农反映强烈。笔者对此进行了调查、观察和防治。现将结果介绍如下：１　形态特征栗大蚜成虫分无翅和有翅两种。无翅胎生雌蚜体长约５ Ampelopsis Aphididae Homoptera Aphididae, also known as black aphids, is the damage to the chestnut shoots, shoots, leaves one of the important pests. Nearly two years in our county red soil development project area Chestnut Park serious, causing great losses, fruit farmers reflect strongly. I conducted a survey, observation and prevention. Now the results are described below: 1 morphological characteristics of chestnut aphids adult wingless and winged two. Awning viviparous female aphids body length of about 5