广西是中国水果的主要产区之一 ,1 998年果树栽培面积 1 0 8万ｈｍ2 ,其中柑桔面积 1 9 7万ｈｍ2 ,产量 1 0 9 1万ｔ,占广西水果总产量的 1 / 3,柑桔产业已成为广西农业的重要组成部份。为了获得好收成 ,果农们每年都要花费很多的人力、物力来对付柑桔的各种病虫害 ,有关部门 Guangxi is one of the major producing areas for Chinese fruit. In 1998, the area under cultivation of fruit trees was 108,000 hm2, of which the area of ​​citrus was 19,700 hm2 and the output was 1,910,000 tons, accounting for one-third of the total output of fruits in Guangxi Citrus industry has become an important part of agriculture in Guangxi. In order to obtain a good harvest, farmers have to spend a lot of manpower and material resources each year to deal with various pests and diseases of citrus, the relevant departments