平凉市位于甘肃东部,海拔890～2857.5m,境内山、川、塬交错,河流相会,地形复杂,气象条件差异显著,作物种类繁多,与之相适应的农田杂草也多种多样。为此,我们进行了多年的调查研究,初步掌握了本市农田杂草的种类、发生群落及为害程度,将本市冬小麦田的杂草群落分为播娘蒿—离子? Pingliang City is located in the eastern part of Gansu, with an altitude of 890 ~ ​​2857.5m. The mountains, the rivers and the plateau are intertwined. Rivers meet, the terrain is complex, and the meteorological conditions are significantly different. There are a wide variety of crops and a wide variety of farmland weeds. To this end, we conducted a number of years of research, initially mastered the city of weeds in the species, occurrence of community and degree of harm, the winter wheat fields in our city weeding communities are divided into sowing Artemisia - ions?