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螺旋粉虱Aleurodicus dispersus Russell是新入侵中国海南的危险性害虫。根据制约螺旋粉虱分布的关键气候因子临界值、有效积温和生物气候相似距,选用Access设计数据库、MapInfo MapX和VisualBasic设计程序,构建螺旋粉虱地理分布模型(geographic distribution model for A.dispersus,GDMAD),并以我国670个气象站点30年的气象资料运行该模型。结果表明:螺旋粉虱在中国的适生区主要包括以广东、广西为中心的1个大区和以四川盆地为中心的1个小区。螺旋粉虱在上述适生区可以安全越冬,1年发生4～12代,以6～9代为主。其中,高度危险区主要包括台湾、海南、广东、广西的大部、福建东南部以及江西、云南的个别地区,面积约38.84万km2;危险区主要包括浙江南部、江西中南部、湖南南部、福建大部、广西北部、云南中南部、四川东南部、贵州南部以及广东、湖北、台湾的个别地区,面积约85.70万km2;轻度危险区主要包括四川、云南、贵州、湖南、江西、浙江等气温较低的部分地区和广东、海南、台湾等降水量过大的个别地区,面积约35.12万km2。
Aleurodicus dispersus Russell is a new pest of the new invasion of Hainan, China. According to the critical climatic factor critical value, effective accumulated temperature and bioclimatic distance which control the distribution of B. tabaci, the Access distribution database, MapInfo MapX and Visual Basic design program were used to construct the geographic distribution model for A. discoideus (GDMAD ), And run the model with meteorological data of 670 weather stations in China for 30 years. The results showed that the suitable area for the Chinese whitefly in China mainly consisted of a large area centered on Guangdong and Guangxi and a small area centered on the Sichuan Basin. The whitefly can be safely wintering in the above-mentioned suitable area for 4 to 12 generations in 1 year, with 6 to 9 generations as the mainstay. Among them, the highly dangerous areas mainly include Taiwan, Hainan, Guangdong, Guangxi, southeastern Fujian and Jiangxi, Yunnan, an area of about 388,400 km2; dangerous areas include southern Zhejiang, southern Jiangxi, southern Hunan, Fujian Most of the area is about 857,000 km2 in some areas of northern Guangxi, central and southern Yunnan, southeastern Sichuan, southern Guizhou, Guangdong, Hubei and Taiwan. The mildly dangerous areas mainly include Sichuan, Yunnan, Guizhou, Hunan, Jiangxi and Zhejiang In some areas with relatively low temperature and in some areas with excessive precipitation such as Guangdong, Hainan and Taiwan, the area amounts to about 351,200 km2.