The Research Of Integrated Pest Management Technology System Of Tobacco In Fangxian County

In order to ring the fangxian County tobacco air force base, the investigation of local tobacco fields pest species, clearly the main focus of prevention and control pest population dynamics and to study new technology, ecological control tobacco pests, improve the regional ecological ring Shennongjia pollution control insect pests in tobacco fields technology system. Major research as follows:Systematic surveys in the whole tobacco growth period in Fangxian Tobacco growing areas showed that:in this area, the commen pest are Heliothis assulta,,DOlycoris and Oecanthus longicauda Matsumura. Among those commen pest, soil pest Agrotis and Myzus persicae are the majority; tobacco aphid had a smaller population but occurred more commonly, it can infect tobacco in the whole growth period, which should be pay attention to.In order to reduce tobacco seedling damage by soil pests, to help the tobacco crop grow evenly and consistently, we tried to find the optimal transplant period without using any pesticides. The test results showed that:With the time goes by, the soil pest damages on transplanted tobacco seedlings were reduced gradually, the rate of hazard was significantly decreased. Concerned the tobacco reproductive period, May 20 is most suitable for transplant.In order to reduce the amount of pesticide residues in tobacco and prevent pest resistance to chemical pesticides on the formation and destruction of natural enemies and the natural environment, plant pesticide derived from natural, safe nonpolluting, is the traditional chemical pesticides a good substitute. The test results show that azadirachtin can be a good alternative to lambda cyhalothrin EC (the improper use of agents) in Daejeon is widely used, the effect equivalent. In order to reduce the use of pesticides in tobacco, improve the quality of tobacco, the use of physical methods of pest control is an effective solution, in which the use of silver gray aphid repellent film is widely used in Daejeon. The results showed that the proportion of the total plastic film, the greater the proportion of silver gray film on the aphid repellent the better, when the silver white films accounted for 2 /3 repellent effect of up to 92% or more, with the repellent effect of The reduction percentage is lower when using a certain percentage of the amount of down time (1/5) were repellent effect disappears.Vibration frequency of the insect pest killing lamp trap types and quantities of the identification and analysis, identification of insect specimens were collected from 12303, initially identified 67 Section 11 orders are 183 kinds. This study of tobacco producing areas of Central Shennongjia eco frequency vibration pest killing lamp types and quantities of trapping insects were identified and analyzed. The results showed that frequency of vibration of tobacco pest insect light traps to kill pests accounted for 3% of the total, natural enemies of insect species of tobacco account for trapping lure 2% of the total number of insect species, the rest are neutral insects. Based on the above results, the authors believe that the frequency vibration pest killing lamp can be used as pest control, an ecoassisted technology in the Central Shennongjia promote the use of ecotobacco producing areas.