柑桔锈螨Phyllocopics oleivorus Ash.亦名锈壁蝨,在四川各柑桔产区均有分布。是为害柑桔主要螨类的一种,以为害果实为主,叶片为次,多数产区果农对其被害果均称之为“油皮柑”、“火烧柑”等。各地从4、5月开始发生,7—10月为其发生盛期。每年猖獗期出现的早迟,主要受高温低湿的环境因子所影响。在一个果园内的发生则又因植株所在地的土壤厚薄,含水程度与树势强弱及栽培管理好坏等条件而异。常年猖獗期为8—9月,在发生季节中遇到长期高温、少雨的环境,繁殖最快,由于每个世代周期较短(7—14日),故一般从开始发生到10余日后进入盛期,在虫口大量出现时,果上的密度较叶上的为大。由于螨体较小,肉眼不易见,在发生盛期仅见果实表面上象积有一层极薄的灰尘,随为害程度的加重,果面及油胞层被破坏,失去应有的光泽,造成很多黑褐色的小斑点,果实生长也同时受到抑制,为害严重时,到最后果 Citrus rust mites Phyllocopics oleivorus Ash. Also known as rust ticks, citrus in Sichuan have distribution. Is the main citrus damage of a mite, mainly to harm the fruit, the leaves for the times, most of the producing areas of their victims are known as “kiwifruit”, “fire kombu” and so on. From April to May all over the place, from July to October for its peak. The onset of rampancy each year is mainly affected by the environmental factors of high temperature and low humidity. Occur in an orchard due to the location of the plant soil thickness, water content and strength of the tree and cultivation and management of good and bad and other conditions vary. Perennial rampant from August to September, in the season encountered long-term high temperature, less rain environment, breeding the fastest, because each generation cycle is shorter (7-14 days), it is generally from the beginning to more than 10 days into During the peak period, when the insect mouth appeared in large quantities, the density on the fruit was larger than that on the leaves. Due to the smaller mite body, the naked eye is not easy to see, in the peak of the fruit only see the surface of the plot as a layer of extremely thin dust, with the degree of aggravation, the fruit surface and the oil cell layer is destroyed, loss of luster, resulting in a lot Small spots of dark brown, fruit growth is also suppressed, serious damage, to the end result