节节麦属禾本科山羊草属。主要分布于欧州 ,特别是伊朗。我国原无节节麦 ,后在我国西安、河南新乡、山东、山西及河北巷州地区零星发现。此种节节麦对小麦的产量和质量都有极大地影响 ,它和小麦争肥、争水、争阳光 ,而且生命力很强 ,致使小麦减产、质量降低 ,是麦田的有害杂草 Section of the genus Poaceae Aegilops. Mainly in Europe, especially Iran. In the past, our country was sporadic, after we found sporadically in our country’s Xi’an, Xinxiang, Henan, Shandong, Shanxi and Hebei Province. Such auspicious wheat has great influence on the yield and quality of wheat. It competes with wheat for fertilizer, contends for water and strives for sunshine, and has strong vitality. As a result, the wheat yield is reduced and the quality is reduced. It is a harmful weed in the wheat field