赭室喀木虱绿色防控技术初步探究OA

Cacopsylla fuscicella is an important newly discovered pest on loquat,which damages loquat trees at both nymph and adult stages and exerts a significant impact on the growth of loquat trees,making it one of the major pests of loquat.Due to the lack of relevant control technology and experience among fruit farmers,as well as the unsatisfactory field control effect,the occurrence of C.fuscicella has been aggravating year by year,which seriously threatens the healthy development of the loquat industry.At present,the control methods adopted by fruit farmers are monotonous,mainly relying on chemical control,which results in high control costs,reduced income for fruit farmers,and excessive pesticide dosage that compromises the safety of loquat fruits.Therefore,it is urgent to develop green control technologies for both nymphs and adults of C.fuscicella.In this study,field trials were conducted in Suijiang county,Zhaotong city,the main loquat producing area,to evaluate the control effects of different green control agents on C.fuscicella nymphs,and the trapping effects of seven different colors of sticky traps(yellow,blue,green,red,purple,red-yellow bicolor,and white)on C.fuscicella adults.The results showed that 0.5％matrine aqueous solution at 1 000-fold dilution and 25％thiamethoxam water dispersible granule at 2 500-fold dilution achieved the optimal control effects at 3 d and 12 d after application.The yellow sticky board presented favorable trapping performance on C.fuscicella adults,with an average weekly trapping amount of 107.0,61.7,182.9 and 84.1 individuals per board,and had relatively low toxicity to natural enemies.It can be applied during the occurrence period of C.fuscicella adults.