花卉苗木传播红火蚁的风险调查

Survey on risk of spreading red imported fire ant in flowers and greening seedlings

红火蚁主要通过调运的花卉苗木等进行远距离传播,为了解不同花卉苗木在传播红火蚁方面的风险情况,本研究调查了广西南宁市内12个花卉苗木场114种花卉苗木的红火蚁发生情况。结果显示,红火蚁在所调查的苗场中均有发生,其中苗场H的发生率和活蚁巢密度最高,分别为43.62%和0.7个/m^(2)。黄金榕、羊蹄甲、假连翘等共计33种植物上红火蚁的发生率超过了10%,占所调查的寄主植物种类的28.95%。双荚决明、黄金串钱柳、澳洲火焰木等6种苗木上的红火蚁发生率高达40%以上,其中双荚决明的发生率高达100%。亟需加强对花卉苗木场的红火蚁防控力度,以降低红火蚁通过苗木调运进行传播和扩散的风险,从而保护生态环境和农业生产安全。

Long distance transmission of red imported fire ants are mainly transmitted through the transported flowers and greening seedlings.To understand the risk of spreading red imported fire ants in different flowers and greening seedlings,this study investigated the occurrence of the red imported fire ants on 114 species of flowers and greening seedlings in 12 flower and tree farms in Nanning,Guangxi,China.The result indicated that red imported fire ants occurred commonly in different flowers and greening seedlings.Both the incidence rate and live ants nest density in farm H were the highest,at 43.62%and 0.7 per square metre,respectively.The incidence rate of the red imported fire ants on 33 species of plants,such as Ficus microcarpa,Bauhinia purpurea,Duranta erecta,exceeded 10%,accounting for 28.95%of the host species.The incidence rate exceeded 40%in Senna bicapsularis,Callistemon hybridus,Brachychiton acerifolius,and other 3 kinds of seedlings.The incidence rate of Senna bicapsularis was up to 100%.So,urgently need to intensify control the ants in flower and tree farms,to reduce the risk of transmission and diffusion of red imported fire ants through flowers and greening seedlings transport,and protect the ecological environments and agricultural production safety.