农药基础知识及注意事项

摘要

介绍了农药的分类、剂型、毒性、使用方法、注意事项及常用病虫害防治机械等，以供参考。%Classification,dosage form,toxicity,application method of pesticides,announcements and machinery of common diseases and insect pests prevention and control were introduced,so as to provide the reference.