柑橘灰象甲 (Sympiezomia citri Chao)又称泥翅象虫，多发生于老橘区或丘陵橘园。樟树市洲上乡铜江村是老橘区， 1991年冻害前每年也有零星发生，但为害不显著，一般不防治。 1992年由于冻害严重，橘树多数仅存活很矮的树干，新叶抽发少、抽发迟。当年柑橘灰象甲发生重，一般每 Sympiezomia citri Chao, also known as mud mites, occurs in the old orange or hilly orangery. Tongshu City Chau Village in Tongzhou is the Old Orange District, 1991 frost damage occurred each year before sporadic, but the damage is not significant, generally do not control. Due to serious frost damage in 1992, the majority of orange trees only survive very short trunk, new leaves less hair, pumping delayed. Citrus gray weevil occurred that year, generally every