Color And Trap Types For The Cydia Pomonella(L.)Effect Of Spawning Selection And Trap Collection Effect

Cydia pomonella L.,belonging to Lepidoptera,Tortricidae,it is one of the most serious pests that harm the kernel and drupe.Since it was first discovered in Korla,Xinjiang in China in the 1950 s,it has rapidly spread to the whole Xinjiang region and gradually spread to surrounding provinces,causing great economic losses to fruit farmers.In this study,after obtaining a large number of test insects by optimizing indoor Cydia pomonella L.rearing technology,the relationship between oviposition selectivity of adult Cydia pomonella L.insects and different colors was explored.Then,according to indoor research results,the trapping effects of green triangle traps and paper traps were compared under different field control conditions.To clarify the influence of host color on Cydia pomonella L.oviposition,color and the effect of trap type on Cydia pomonella L.trapping and prevention and control,and to provide theoretical basis for scientific prevention and control of Cydia pomonella L.in practice.The conclusions are as follows:1.The influence of feeding conditions on the growth of Cydia pomonella L.larvae and the oviposition of adult worms.Among the four inoculation densities,the weight gain of larvae at density 2(2 head /2.5g feed)was more obvious than that at other densities.Feeding on apple cores could effectively increase the body weight of Cydia pomonella L.Eating an apple core before 10 days can significantly increase the weight of Cydia pomonella L larvae,and works best at the 20 age at 2% of the total feed mass.The different sex ratio had a significant effect on the spawning quantity of Cydia pomonella L..In each ratio,when the ratio of male to female is 1:2,the total number of eggs laid by Cydia pomonella L.is significantly more than that of other sex ratios,and the number of eggs laid by a single female reaches 139.2 per day,And the peak spawning time is the most regular,on days 3,6,9 and 11 days,respectively.2.The effect of color on oviposition selection in Cydia pomonella L..The results showed that the substrate color had a significant effect on the oviposition selection rate and the amount of oviposition.The oviposition selection rate and the amount of oviposition in pink were 38.24% and 35 / oviposition in pink,Next is light green(30.41%,14.3),respectively,and strawberry red(6.17%,5.1)and orange yellow(8.18%,3.5)showed some avoidance effect.The substrate color also had a significant effect on the oviposition selectivity of female adult Cydia pomonella L.at different days of age,The maximum selection rate was light green(71.4%),and the maximum single female spawning volume was pink(8.67 grains).3.Comparison of field trapping effects of two kinds of green traps on Cydia pomonella L.under different control measures.The results showed that the peak of Cydia pomonella L.occurrence was June 13,June 20,July 1 and July 13,respectively.The trapping effect of paper type trap is better than triangle type trap under various control measures.Among all the control measures,the control zone of rosacea was the best,Synthetic sex pheromone have the worst trap effect.In conclusion,the density of larval inoculation and the proportion of apple cores in artificial diet are the influencing factors for the growth and development of Cydia pomonella L.larva,and the female-male ratio is an important influencing factor for the number of eggs laid by Cydia pomonella L..Reasonable feeding techniques can provide sufficient test insects for related experiments.Host color plays an important role in the selection of oviposition sites for Cydia pomonella L..The results of this study provide a basis and reference for the application and promotion of oviposition monitoring and color in prevention and control,and even for further revealing the mechanism of oviposition host selection.The reseda paper trap is more suitable for monitoring the occurrence of Cydia pomonella L.than the green triangle trap.The flocculating wire control can effectively reduce the use of chemical agents,Synthetic sex pheromone can effectively reduce Cydia pomonella L.,it is a pollution-free control measure worthy of being promoted in a wide range.