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沙柳(Salix gordejevii Chang etSkv.)是防风固沙的主要树种和柳编原料。我区栽培面积达20多万亩。沙柳瘿螨病害是我区的初见病害。1981年我们在灵武县白芨芨滩防沙林场首次采到病害标本。1982年在沙柳引种地的陕西省靖边、定边两县相继发现零星分布,其中以白芨芨滩防沙林场和靖边县旧城区较严重,发病株丛率50％左右,个别片林高达90％以上。靖边县旧城公社五台山地区,因
Salix gordejevii Chang et Svv. Is the main tree species and wicker raw material for windbreak and sand fixation. My area cultivation area of more than 20 million mu. Salix mite disease is the initial disease in our area. In 1981, we took the disease samples for the first time in the Baishabaitan Deserted Forest Farm in Lingwu County. In 1982, the introduction of Salix in Shaanxi Province in Jingbian, Dingbian two counties have been found sporadic distribution, of which Baizhibitan Beach Sands and Jingbian old town more serious, the incidence of about 50% Up to 90% or more. Jingbian Old City commune Wutai Mountain area, due