Bioactivities of extracts from acorus gramineus soland against sitophilus zeamais motschulsky 石菖蒲提取物对玉米象的驱避和触杀作用
2.
These chemicals are broad - spectrum contact insecticides that provide rapid knockdown effects on insects but with only little residual activity 这些化学品是广谱触杀性除害剂,具快速触杀作用,但残留效力并不持久。