广西白木香病虫害调查与鉴定OA

In order to provide basic data for Aquilaria sinensis disease and pest control,taking 7 A.sinensis plan-tation bases in Guangxi as research objects,general survey and standard plot investigation were conducted to systematically investigate species,distributions and damages of diseases and pests and to analyze occurrence situations and damage patterns of main diseases and pests.Results showed that total of 8 diseases were identi-fied,including sooty mold,leaf spot disease,root-knot nematode disease,sheath blight,white rot,brown rot,velvet blight disease and lichen disease.Among which,sooty mold and root-knot nematode disease were wide-spread and caused severe damages,with incidence 44.09%and disease index 24.52 of sooty mold,and inci-dence 28.00%and disease index 18.67 of root-knot nematode disease.Total of 11 pests were identified,includ-ing Heortia vitessoides,snails,locusts,Spodoptera litura,Neurozerra conferta,Arbela bailbarana,Endoclita viet-namensis,Cnestus sp.1,Cnestus sp.2,Cnestus aterrimus and Megopis sp..Among which,H.vitessoides and N.conferta caused severe damages,with incidence 83.58%and pest index 59.36 of H.vitessoides,and incidence 49.42%and pest index 28.97 of N.conferta.E.vietnamensis was reported for the first time as pest found on A.sinensis in Guangxi.Diseases and pests were more numerous and caused more severe damages in Shatian vil-lage of Shiwo town and Wanghe village of Dalun town in Beiliu.