Bait with 40000 nematodes per plant killed 68.53%of black cutworm on average.

毒法（线剂量为40000条.株-1）防治小地老虎的田间平均防治效果可达68.53％.

The implication of the findings to control the back cutworm in fields was discussed.

还讨论了结果应用的可能性。