泰安位于鲁中南地区,麦田常见杂草主要有播娘蒿、荠菜、鹅不食,其中播娘蒿出现频率在90％以上,荠菜65%以上,鹅不食50％左右。这几种杂草均为一年生杂草,是我市麦田杂草防除的主要对象。为了给试验设计和调查取样提供理论依据,帮助分析杂草在农田发生发展动态,我们对这几种杂草分布型及应用进行了研究。一、材料与方法(一)分布型的调查和统计方法 Tai’an is located in central and southern Luzhou. The main weeds in wheat field are sowing Artemisia annua, shepherd’s purse, and goose. The frequency of occurrence of Artemisia annua is over 90%, over 65% of shepherd’s purse and goose do not eat about 50%. These weeds are annual weeds, wheat weeds in our city is the main target of prevention and control. In order to provide a theoretical basis for experimental design and survey sampling to help analyze the occurrence and development of weeds in farmland, we studied the distribution and application of these weeds. First, materials and methods (a) distributed survey and statistical methods