1. Many farmers use nematocidal chemicals to protect their crops from nematode infestation.
许多农民使用杀线虫的化学药物来保护庄稼免受线虫侵害。

2. The nematocidal properties of this pesticide make it effective against various garden pests.
这种杀虫剂的杀线虫特性使其对各种花园害虫有效。