Synergistic Attraction and Ecological Effects of Multi-Source Physical and Chemical Trapping Methods with Different Mechanism Combinations on Rice Pests

Comparative experiments on trapping major rice pests using different methods showed that a light-transmitting three-combination trapping method, using different combinations of color plates + insect sex pheromones + transmitting (shielding) light covers + solar-powered automatic insect-attracting ultraviolet lamps, demonstrated significant positive attraction and synergistic effects on the simultaneous capture of multiple pests, including rice <i>Sogatella furcifera</i>, <i>Laodelphax striatellus</i>, <i>Chilo suppressalis</i>, and <i>Sesamia inferens</i> and rice leafhoppers, <i>Sitobion miscanthi</i>, <i>Cnaphalocrocis exigua</i>, <i>Parnara guttata</i>, and <i>Naranga aenescens</i>. In addition, the light-transmitting three-combination trapping method has a low benefit-harm ratio and is not easily disturbed by non-target flies (<i>Muscadomestica</i>). The ultraviolet light and transmitting cover in the device had a negative effect on attracting the <i>Cnaphalocrocis medinalis</i>, resulting in a highly significant or significant decrease in its capture rate. The results also showed that the light-shielding double-combination trapping method, which lacks ultraviolet lamp waves and transmitting covers, had no significant difference in the capture rate and insect benefit-harm ratio of <i>C. medinalis</i> adults compared with the glue-type sex lure method, confirming that <i>C. medinalis</i> has a significant negative tendency characteristic to ultraviolet lamp waves and transmitting covers. Therefore, the light-shielding double-combination trapping method using color plates and insect sex pheromones is recommended for monitoring the weakly phototactic <i>C. medinalis</i>. The light-transmitting three-combination trapping method is preferred for the simultaneous capture of multiple major rice pests besides <i>C. medinalis</i>. This study provides a scientific basis for the rational and effective application of multi-source physical and chemical trapping for monitoring and pest control of major crop pests.