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近年来，随着农田生态环境的变化，麦田播娘蒿发生危害程度愈来愈重。鉴于目前尚无其产量损失及防治指标，为科学地指导防除，我们于２００２年测定了播娘蒿对小麦危害产量损失，并初步制定了防治指标。１材料与方法试验地选在水肥条件中等、地力均匀、播娘蒿密度较大的麦田。
In recent years, with the change of farmland ecological environment, the harm of sowing Artemisia annua in wheat field is more and more serious. In view of the fact that there is no yield loss and prevention and control index yet, in order to scientifically guide the prevention and control, we measured the loss of yield of Artemisia annua to wheat in 2002 and preliminarily formulated the control index. 1 Materials and Methods Experimental selection in the medium and water conditions, soil fertility, Sowing Artemisia density larger wheat fields.