Dynamic changes of Bactrocera dorsalis(Hendel)and its integrated control in Gan-nan navel orange orchards
In order to master the dynamic changes of Bactrocera dorsalis(Hendel)and its integrated control in Gannan navel orange orchards,from 2020 to 2022,the occurrence of B.dorsalis in different types of navel orange gardens under normal management,out of control,partial out of control,and net shed were monitored,and the damage of B.dorsalis was investigated and the control effects of different measures were compared.The results showed that the outbreak of B.dorsalis was more serious in the fruit expansion stage,which ac-counted for more than 69.9％of the annual occurrence.When the soil moisture was below 13.3％for a long time or in monotogenous habitat(net-shed cultivation),it was unfavorable for occurrence of B.dorsalis.The adults B.dorsalis mainly damage the cracked navel orange fruits before September and gradually damage the healthy fruits after mid-September.Painting the Steiner-type plastic trap(the connecting part of the umbrella cap and bottle body)from lemon yellow to orange red could improve the trapping effect on adults.In mid-Au-gust,hanging a red-necked trap every 120 m2 of navel orange orchard,the annual damage rate of B.dorsalis was 1.1％,which was superior to that of Avermectin and Ambroxol.
Bactrocera dorsalisdynamic changesgreen prevention and control
NETL
NSTL
万方数据
