Impact of sex pheromone aerosol puff on the behavior of Chilo suppressalis and its control effect in rice fields
By releasing high-dose sex pheromones in the paddy fields,we studied the courtship and mating behavior of adult Chilo suppressalis Walker,and evaluated the control effects of sex pheromone mating disruption and mass trapping.The release of the sex pheromone was automated and scheduled at specific times and intervals in the rice fields.The application effects of different techniques were evaluated based on the analysis of the male moth trapping amount,mating disruption rate,filed larvae amount,rice damage rate,and rice yield in the corresponding treatment areas.The results showed that spraying high-dose sex pheromone to disrupt mating led to an average disruption rate of 99.8％in male C.suppressalis,accompanied by a 95.1％decline in C.suppressalis larvae.The damage rate of rice was significantly lower than that observed in the control and mass trapping areas.The effective panicle rate and the number of grains per panicle in the sex pheromone mating disruption area and the mass trapping area were significantly higher than those in the control,although no significant difference was observed in 1,000-grain weight.The yield per mu was 556.4±47.0 kg in the sex pheromone mating disruption area,532.9±29.2 kg in the pheromone trapping area,and 423.5±19.1 kg in the control.The comprehensive evaluation showed that the application effect of the sex pheromone mating disruption method of C.suppressalis was better than that of the mass trapping method.
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