Statistics And Analysis Of Alien Pests At Shenzhen Port

The cross-border spread of exotic pests has become a global concern.The cross-border spread of exotic pests has become a global concern.Statistics and analysis of foreign pests’ quarantine interception is one of the important scientific bases for prevention and control,and also an important means to ensure international trade,agricultural and forestry safety and ecological safety.Shenzhen is the earliest special economic zone in China,and the plants and their products imported from Shenzhen are always in the forefront of the country.The statistics and analysis of the intercepted pests at Shenzhen Port can reflect the risk of the imported plants and their products’ dangerous pests invading our country.In this study,the interception of exotic pests at Shenzhen Port in the past 20 years was collected and collated,and the statistics and analysis were carried out according to the year,the category of pests and the country,the main results are as follows: 1.The species and frequency of harmful organisms intercepted by plants and their products were analyzed.The types of harmful organisms and quarantine pests intercepted at Shenzhen Port showed an overall upward trend and fluctuated during the period.The highest detection rate of most harmful organisms and quarantine pests occurred in 2016,a total of 1,656 species of pests and 104 species of quarantine pests were intercepted in the year,and the lowest detection rate of pests and quarantine pests occurred in 2000,in which a total of 108 species of pests and 27 species of quarantine pests were intercepted.2.The highest proportion of pests and quarantine pests intercepted at Shenzhen Port were insects and quarantine insects,accounting for 53.93% and 55.68% respectively,followed by weeds and quarantine weeds,accounting for 27.85% and 29.18% respectively(3)fungi and quarantine nematodes,accounting for 10.31% and 7.26% respectively;(4)nematodes and quarantine fungi,accounting for 3.24% and 4.50% respectively;(4)viruses and quarantine viruses,accounting for 0.27% and 1.10% respectively;Bacteria and quarantine bacteria accounted for 1.09% and 3.24% respectively.3.The pests and quarantine pests intercepted at Shenzhen Port were related to the importing countries or regions of plants and plant products,and the plants and their products imported from the United States,Malaysia and Thailand were among the top three intercepted pests.4.For the first time,10 species of insects,3 species of pathogens and 1 species of nematodes were intercepted at Shenzhen Port,bacterial wilt of grape stems,bacterial wilt of Cassava,bacterial wilt of bean,and other bacterial diseases,Cryptocystis Brinkmann.From 2000 to 2019,10 species of insects,40 species of weeds,7 species of pathogens and 4 species of nematodes were intercepted at Shenzhen Port for the first time.5.The species and frequency of the pests and quarantine pests intercepted at Shenzhen Port are related to the imported quarantine objects.Take 2011,for example,the top 10 quarantine materials were: 16,324 kinds of beans,11,418 kinds of fruits,6,517 kinds of wood,4,858 kinds of grain,4,381 kinds of ornamental plants,2,544 kinds of vegetables,2,062 kinds of breeding materials,1,366 kinds of plant materials,334 kinds of tobacco,168 kinds of medicinal materials.The import of soybean,seed,seedling and fruit were the most important goods with high insect frequency,and the import of soybean,wheat,rapeseed and corn were the most important goods with high weed frequency The main goods with high frequency of fungi interception were imported fire dragon fruit,Durian,grape,corn,longan,apple,soybean,camellia,mangosteen,PEA,etc.Yellow soybean and lily seed balls were the most important goods with high virus frequency The main goods with high frequency of intercepted nematodes were imported seedlings of genuine cypress,flower seedlings intercepted by brigade and plant products such as tomato seedlings,orange seedlings,aloe seedlings and Taro.Based on the results of statistical analysis of this study,it is proposed that the quarantine of entry plants and their products at ports should be further strengthened,especially the quarantine of quarantine fungi,viruses and bacteria,which have a low detection rate,we need to further strengthen the quarantine of imported logs,raw grain and fruits,and increase the proportion of samples sent for inspection of several types of products.We also need to strengthen the monitoring of exotic pests in Shenzhen,the level of monitoring quarantine bactrocera flies,quarantine weeds and quarantine fungi should be raised,and measures to deal with harmful alien organisms should be strengthened,the level of quarantine treatment for quarantine insects carried by logs and quarantine treatment for pests carried by passengers will be raised.