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本文概述了化学除草剂在夏玉米田的应用现状，并针对生产应用中存在的问题指出长残效除草剂应在有力监控下合理使用，同时，应大力开发研制高效、低残留的新型制剂及混剂。
This paper summarizes the application status of chemical herbicides in summer maize fields and points out that the long-acting herbicides should be used under the control of strong monitoring in view of the problems in the production and application. At the same time, we should develop new formulations with high efficiency and low residue Agent.