1 材料与方法
1.1 材料
1.2 方法
1.3 数据分析
2 结果与分析
2.1 Bt对腰果细蛾幼虫的作用效果
表1 苏云金芽胞杆菌对不同腰果细蛾幼虫的校正致死率Tab. 1 Corrected mortality of B. thuringiensis against A. syngramma larvae % |
| 试验浓度Dose | 1龄First instar | 2龄Second instar | 3龄Third instar | 4龄Fourth instar | 5龄Fifth instar |
|---|---|---|---|---|---|
| 500 | 100.0±0.0aA | 84.7±2.7aB | 92.5±4.8aAB | 52.5±8.5aC | 32.5±6.3aC |
| 1000 | 95.0±2.9aA | 82.5±8.5aAB | 70.0±7.1bBC | 42.5±6.3abCD | 20.0±7.1abD |
| 2000 | 66.9±4.3bA | 59.4±6.5bAB | 42.5±7.5cBC | 32.5±6.3abcC | 7.5±4.8bcD |
| 4000 | 51.4±4.3bA | 25.8±6.7cB | 35.0±6.5cAB | 20.0±4.1cB | 5.0±2.9cC |
Note: Data was mean±SE (n=4). Different small letters in the same column or capital letters in the same row indicate significant difference at 0.05 level. | |
注:数据为平均数±标准误(n=4),同列数据后不同小写字母或同行数据后不同大写字母表示在0.05水平差异显著。 |
2.2 Bt对腰果云翅斑螟幼虫的作用效果
表2 苏云金芽胞杆菌对腰果云翅斑螟幼虫的校正致死率Tab. 2 Corrected mortality of B. thuringiensis against Nephopteryx sp. larvae % |
| 试验浓度Dose | 24 h | 48 h | 72 h | 96 h | 120 h |
|---|---|---|---|---|---|
| 500 | 7.5±4.8aD | 20±4.1aC | 43.6±2.4aB | 55.0±3.7aB | 75.2±5.2aA |
| 1000 | 10.0±0.0aC | 22.5±2.5aB | 30.8±4.2aB | 49.7±6.8aA | 57.7±8.3aA |
| 2000 | 5.0±5.0aB | 10.0±4.1aB | 30.6±3.6aA | 49.7±8.2aA | 55.6±5.7aA |
| 4000 | 2.5±2.5aB | 10.0±7.1aAB | 15.0±8.7bAB | 20.6±6.8bB | 21.4±5.7bAB |
Note: Data was mean±SE (n=4). Different small letters in the same column or capital letters in the same row indicate significant difference at 0.05 level. | |
注:数据为平均数±标准误(n=4),同列数据后不同小写字母或同行数据后不同大写字母表示在0.05水平差异显著。 |
2.3 Bt与小卷蛾斯氏线虫All品系的联合作用效果
表3 Bt与小卷蛾斯氏线虫All品系对腰果云翅斑螟的联合作用效果Tab. 3 Interaction among the combination of S. carpocapsae All and Bt against Nephopteryx sp. larvae |
| 处理时间 Treatment time/h | MN | MI | MNI | M | ME | X2 | 作用 Effect |
|---|---|---|---|---|---|---|---|
| 24 | 0.283 | 0 | 13.98 | 0.283 | 16.98 | 0.53 | 相加 |
| 48 | 0.383 | 0.1 | 54 | 0.4447 | 26.68 | 27.97 | 增效 |
