Objective To investigate the effect of residual spraying of lambda-cyhalothrin microcapsule suspension on hedgerow in preventing and controlling mosquitoes. Methods This test was initiated on August 13, 2015, with a duration of one month. Two areas (control area and test area) with similar natural conditions and mosquito density were studied. Residual spraying was implemented using low-volume spray on the leaves (especially the backside) of the hedgerow in the test area. The change in the density of adult mosquitoes after spraying was continuously monitored by the CO2 lamp trapping method. The prevention and control effect was evaluated by the decrease rate (%) of relative density. Results After residual spraying of the hedgerow in the test area, the relative density of mosquitoes showed a decrease rate of more than 80% within 2 weeks and a decrease rate of more than 70% at 3 and 4 weeks after treatment as compared with those in the control area (no insecticide treatment). The study above was repeated once in the same place in mid-August, 2017, with the obtained results basically consistent with those in 2015. Conclusion Taking account of environmental safety and sustainable control of mosquitoes, it can achieve a good control effect on relatively high-density adult mosquitoes by standardized residual spraying on hedgerow using proper insecticides and dosage forms under feasible application environments and conditions accompanied by environmental control measures.
ZHOU Xiao-jie, ZHANG Yong, YAN Ting, LI Jing, LIU Mei-de, FU Xue-feng, LI Qiu-hong, LIU Ting, TONG Ying, ZENG Xiao-peng
. A preliminary study on the effect of residual spraying on hedgerow in preventing and controlling mosquitoes[J]. Chinese Journal of Vector Biology and Control, 2019
, 30(6)
: 653
-656
.
DOI: 10.11853/j.issn.1003.8280.2019.06.013
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