一、发现与症状该病在光泽县大陂柑桔示范场发现,该场面积285亩,前作是旧茶园,1987年冬开垦,于1988年春定植1.8万株温州蜜柑幼苗及少量的武夷橙、葡萄柚、杨梅、葡萄等.定植以后肥水管理正常,但植株生长缓慢,至5月底,幼树仍未发根、抽梢,根系附有小肿瘤,似虫瘿. First, the discovery and symptoms of the disease found in the county demonstration citrus orange fruit, the field area of ​​285 acres, the former is the old tea plantation, reclaimed in the winter of 1987, in the spring of 1988 planted 18,000 Wenzhou Satsuma seedlings and a small amount of Wuyi orange, Grapefruit, red bayberry, grapes, etc .. Fertilizer and water management after planting normal, but the slow growth of plants, by the end of May, young trees have not yet hair roots, shoot tip, root with small tumors, like insects.