Field Trapping of Two Common Lepidoptera Pests in Tea Gardens in Xinyang City Henan Province
By using applied pheromones combined with traps,this study explores the dynamics of the occurrence of the Ectropis grisescen and Euproctis pseudoconspersa in Xinyang.At the same time,compares the trapping capacity of different placement heights and types of traps simultaneously,and the occurrence dynamics of the Ectropis grisescen and Euproctis pseudoconsper-sa during their occurrence period in Xinyang are explored.The technical parameters and effectiveness of the traps used in tea gardens are also discussed.The results showed that there were three peaks of occurrence of the Ectropis grisescen in Xinyang,which were from early June to mid to late June,from mid August to late August,and from mid September to early October;The Euproctis pseudoconspersa has one major peak(mid to late June)and two small peaks(mid to late August and mid to late September).There is a significant difference in the amount of Ectropis grisescen caught by the trap hanging at a height of 10 cm and 15 cm.Overall,the amount of traps suspended at a height of 15 cm above the tea canopy was greater than that suspen-ded at a height of 10 cm above the tea canopy.There is no significant difference in the trapping amount between the same height triangular trap and the boat type trap.The experimental results provide a good time for the green prevention and control of the Ectropis grisescen in Xinyang,as well as the selection of bait placement methods,in order to improve the control effect of the Ectropis grisescen and Euproctis pseudoconspersa,save control costs,and improve the quality of tea in Xinyang.