| 时期 | 对照组 数量/头 | 化学农药组 | 罗勒烯处理组 | ||
| 数量/头 | 虫口减少率/% | 数量/头 | 虫口减少率/% | ||
| 4/10 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 |
| 4/17 | 2.08 ± 0.52 | 0.53 ± 0.15 | 74.52 ± 9.25a | 0.82 ± 0.22 | 60.57 ± 7.33b |
| 4/24 | 7.85 ± 2.67 | 3.56 ± 0.87 | 54.65 ± 9.85a | 3.17 ± 1.04 | 59.62 ± 11.50a |
| 5/01 | 12.10 ± 3.55 | 1.94 ± 0.55 | 83.97 ± 5.25a | 4.12 ± 1.66 | 65.95 ± 8.66b |
| 5/08 | 6.80 ± 1.95 | 3.29 ± 0.65 | 51.62 ± 5.25b | 2.81 ± 0.75 | 58.67 ± 6.03a |
| 5/15 | 8.05 ± 3.23 | 2.24± 0.52 | 77.17 ± 8.27a | 3.18 ± 1.15 | 60.50 ± 7.16b |
| 5/22 | 8.33 ± 2.78 | 4.21 ± 1.76 | 49.46 ± 7.05b | 3.20 ± 0.55 | 61.58 ± 4.50a |
| 5/29 | 6.25 ± 1.85 | 1.87 ± 0.46 | 70.08 ± 10.25a | 2.19 ± 0.73 | 64.96 ± 9.85a |