Abstract: he study showed that Artemisia scoparia contained 0.38% of volatile oil,in which,a total of 38 chemical components were identified,accounting for 87.53% of the substances detected,and 12 kinds of terpenoids compounds were the main components,accounting for 45.04% of the total.The oil had a high and rapid poison activity on Culex pipiens pallens larva and adult.The LC₅₀ value for the larva was 12.5 mg·L^-1 within 2 days,and the mortality of the adult in 24 hours was 70% and 100% when the dosage was 1 and 10 μg·cm^-2.

Key words: Hefei outskirts, Non irrigated flatland, Soil nutrient loss ways, Physical erosion, Chemical erosion