本书以“新”和“实用”为指导思想,对《农药问答精编》(第一版)的内容进行仔细筛选,在保留当前农药领域备受关注的焦点和热点问题的基础上,补充了新内容,如增补了近几年来登记的新品种,删除了已经停产、停用和限制使用的品种及老旧品种(包括其混剂、机理)的部分内容。 The book with “new ” and “practical ” as the guiding ideology, “pesticides Q & A” (first edition) of the contents of the screening carefully, while retaining the current focus of attention in the field of pesticides and hot issues Based on the new content added, such as adding new varieties registered in recent years, has been discontinued, disabled and restricted varieties and older varieties (including the mixture, mechanism) part of the content.