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荔枝瘿螨在南宁地区每年出现二个虫口高峰,第一个高峰在5～6月;第二个高峰在9～10月。其为害引起落花、落果,着果率降低,被害枝着果率仅为健枝的42.4%,受害果重量减少10%～16%。新梢未萌发之前,螨体大部分集中在被害梢毛瘿内,其中又以鲜褐色毛毡螨量最多,其次为褐色毛毡。过冬瘿螨多群集在被害的夏梢及秋梢毛毡上。当新梢萌发刚露白时,瘿螨即从被害梢毛毡转移至新芽上。基于这一习性,在荔枝树未发新芽前剪除害梢是防治该螨的有效方法,较适合于幼树。药剂防治最好在新梢萌发时进行。
Litchi scabies mites in Nanning area every year two peak population, the first peak in May to June; the second peak in September to October. The harm caused by falling flowers, falling fruit, the fruit rate decreased, the victim branches rate is only 42.4% of healthy branches, victimized fruit weight decreased by 10% to 16%. Before the shoots did not germinate, most of the mite bodies were concentrated in the scabies, among which the amount of fresh green felt was the most, followed by the brown felt. Winter mites multi-cluster mites killed in the summer tip and autumn tip felt. When the shoots germinate freshly exposed white, scabies mites that were transferred from the affected felt to shoots. Based on this habit, it is an effective method to control the mite before the sprouts are lifted without sprouting, which is more suitable for saplings. Pharmacy is best controlled when the shoots germinate.