美国土壤杀虫剂市场主要同防治玉米幼芽根叶甲(Diabrotica virgifera virgifera)、长角叶甲(D. longicornis barberi)二种鞘翅目玉米害虫幼虫有关。1985年美国约有1200万公顷玉米田施用土壤杀虫剂(占全部玉米种植面积的35％),其中1050万公顷是在播种时施药的。另一种主要农业土壤害虫是切根虫(Agrotis ipsilon),这是整个北美和其他许多国家玉米苗期及一些作物的主要害虫。由于这种害虫的迁移特性,难以预测,所以最经常性的防治 The US soil insecticide market is primarily associated with two species of Coleoptera corn pest larvae that control Diabrotica virgifera virgifera and D. longicornis barberi. In 1985, about 12 million hectares of cornfields were used in the United States for soil pesticides (35% of total corn acreage), of which 10.5 million hectares were applied at planting. Another major agricultural soil pest is the Agrotis ipsilon, a major pest of the seedling and some crops throughout North America and many other countries. Because of the pest migration characteristics, unpredictable, so the most frequent prevention and control