浓度(GV/ml) | 稀释倍数 | 斜纹夜蛾不同虫龄死亡率(%) | |||
3龄 | 4龄 | 5龄 | 6龄 | ||
6 × 106 | 200 | 66.7 | 88.9 | 88.9 | 94.4 |
4 × 106 | 300 | 44.4 | 72.2 | 77.8 | 83.3 |
3 × 106 | 400 | 27.8 | 50 | 66.7 | 55.6 |
2.4 × 106 | 500 | 16.7 | 27.8 | 44.4 | 33.3 |
2 × 106 | 600 | 11.1 | 16.7 | 38.9 | 16.7 |