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自七十年代后期以来,我省不少地区先后开展了稻、麦、棉田草害的调查工作,根据各地经验及笔者实践,就调查方法提出几点看法,以供讨论。一、草害调查的目的农田草害调查属宏观、概略性调查,内容是调查一定地区内不同耕作制度下主要杂草的种类、分布、侵染为害现状,并予测发生发展趋势。这是一项基础工作。对制订综合防除对策,有计划地生产与合理分配除草剂,确定研究课题以及为农业区划提供资料都有其重要意义。
Since the late 1970s, many areas in our province have conducted surveys on grass and pests of rice, wheat and cotton fields. Based on local experiences and author’s practice, we put forward some opinions on the methods of investigation for discussion. I. Purpose of Grassland Investigation The investigation of grassland pollution in farmland is a macro and broad survey to investigate the occurrence, distribution and prevalence of major weeds under different farming systems in a certain area and to predict the occurrence and development trend. This is a basic work. It is of great significance to formulate comprehensive prevention and control measures, plan the production and distribution of herbicides rationally, determine research topics and provide information for agricultural zoning.