据有关资料报道,桔小粉蚧(Pseudocoecus citriculus Green)在我国柑桔产区普遍发生,主要为害叶部,是一种地上部的害虫。在西双版纳地区发生严重,被害率达70％,但大多为害桔苗的根部。很少转移到地上部为害,从而增加了防治工作的困难。我们从1982年终到1985年初进行了一些观察和试验。现将有关资料初步整理如下。 According to the relevant data reported, Pseudocoecus citriculus Green (Citrus reticulata) occurs in our citrus producing areas, the main damage leaves, is a pest above the ground. Severe in Xishuangbanna, killing rate of 70%, but most of the roots of the damage of Miao. Rarely transferred to the ground harm, thus increasing the difficulty of prevention and control work. We conducted some observations and experiments from the end of 1982 to the beginning of 1985. The relevant information is now sorted as follows.