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Comparison Of Dynamic Monitoring Effect Of Insect Diversity Between Malaise And Light Trap

Posted on:2021-03-17Degree:MasterType:Thesis
Country:ChinaCandidate:Y WangFull Text:PDF
GTID:2393330611457342Subject:Agriculture
Abstract/Summary:PDF Full Text Request
With the abuse of chemical pest control appearing constantly,the main direction of integrated pest management is to advocate green control against insect pest.Light trap as one of common insect pest forecast and control tools,has been widely used in agricultural production because of its broad spectrum of insecticidal,budget-efficiency,and operability.However due to pests and beneficial insects in phototaxis band have overlap,light trap could also pose threat to the existence of beneficial phototactic insects,biodiversity and ecological balance may be adversely effected.The thesis' s aim is mainly to provid an essential for improving the accuracy and comprehensiveness of the operation of the light trap.The main findings are as follows:(1)It is proved that Malaise trap and light trap are complementary in effective operation period and target insect category.Lepidopterans and coleopterans are the main herbivores collected by the light trap,while the insect enemies are mainly neuropterans and coleopterans.Light trap has no monitoring effect on diurnal and aphototactic insects.The insects collected in the Malaise trap are mainly insect enemies,mostly hymenopteran whose hosts are lepidopteran pests,Malaise trap can monitor the diurnal insects effectively.(2)Optimzation for adjusting the operating time and switching frequency of the light trap.On the one hand,by investigating the night activity of different guilds of insects,the running time of light trap could be adjusted according to the optimal period.On the other hand,by grasping the dynamic fluctuation of insect species diversity,we can adjust the sampling frequency of different months.The two aspects will be combined to form a complete set of experimental scheme,so as to ensure the control effect on the basis of reducing the harmness on beneficial insects,and at the same time to improve the ecological benefits of the light trap,reduce operating costs,and extend working life.
Keywords/Search Tags:Malaise trap, light trap, integrated pest management, species diversity, population dynamics, ecological benefits
PDF Full Text Request
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