Study On Insect Trapping Species And Pest Control Ability Of Insecticidal Lamp In Citrus Orchard Of Yidu City

Phototaxis is an instinctive behavior of insects,and the use of phototaxis to trap and kill pests with light is a common green pest control technology,which is widely used in pest control in farmland,tea trees and cotton.However,light trapping technology is still less used in orange orchard pest control.In order to evaluate the trapping effect of trap lights on citrus pests,and also to clarify the harmful effects of trap lights on natural enemy insects and neutral insects in orange orchards and their critical period,this study selected solar fan inhalation insecticidal lights,and adopted light trapping.The method of light trapping experiment was carried out in the Yidu Citrus National Standard Demonstration Garden in Yidu City,Hubei Province.From April to November 2019,the solar lights were turned on to trap insects every 10 days,and the trapped insects were identified and statistically analyzed.The research results clarified the types and occurrence dynamics of insects trapped by lights in the orange orchard ecosystem,revealed the main pest species and outbreak periods in orange orchards,and the trapping effect of insecticidal lamps on natural enemy insects and neutral insects.The research results provide a theoretical basis for the scientific application of insecticidal lamps in orange orchards and the improvement of green pest control technology.The major results of this study are as follows:(1)The insecticidal lamps trapped 11 orders and more than 30 families of insects in the orange orchard,and the total number of traps reached more than 3,785.Among them,Lepidoptera and Hemiptera were the main insects,and the trapped insects accounted for37.46% and 27.85% of the total,followed by Trichoptera and Coleoptera.Late July to late August is the peak period of Lepidopteran occurrence;early July,late July to mid-August is the peak period of Hemiptera;mid-September is the peak period of Coleoptera.(2)There are 3 orders and 10 families of pest species trapped by insecticidal lamps in orange orchards,which are mainly stink bug family,beetle family and leaf beetle family,and the trapped quantity accounts for 82.06%,9.27% and 4.78% of the total respectively.The peak period of orange orchard pest trapping is mainly in early July,late July to mid-August.The trap light has no obvious trapping effect on the functional groups of citrus fruit pests(belonging to the main target functional groups of the trap lights),such as citrus fruit fly,fruit sucking moth,fruit sucking stink bug,etc.The underground pest function group in the garden has strong trapping and killing ability.(3)There are 4 orders and 13 families of natural enemy insects trapped by insecticidal lamps in orange orchards,mainly Carabidae,Coccinellidae and Hidden winged insects.% and 11%,the trapping peaks are in late May,late July and mid-September.Among them,the natural enemy insects of Carbidae are at the peak in late May and mid to late September;the natural enemy of Coccinellidae is at the peak of late July;The neutral insects trapped by insecticidal lamps in the orangery are mainly Lepidoptera,Hemiptera,Trichoptera and Diptera.The peak trapping period is mainly from late June to early July and late July to late August.In summary,the application of insecticidal lamps in citrus orchards can trap and kill pests in the orange orchard ecosystem to a certain extent.At the same time,there is also a certain degree of damage to the natural enemies of orangery and neutral insects.According to the peak period of trapping various insects by insecticidal lamps,if insecticidal lamps are used in orange orchards for green pest control,early July is an ideal trapping period,which can not only trap and kill orange orchard pests,but also prevent natural enemies.Insects have no obvious trapping damage,but have a certain degree of trapping damage to neutral insects.The results of this paper provide a theoretical basis and reference for the application of insecticidal lamps in orange orchard pest control,and also provide a basis for the rational and comprehensive application of various green control measures.Based on this,green prevention and control strategies were formulated to improve the economic and ecological benefits of integrated pest management in orange orchards.