节节麦是世界性的恶性杂草,1996年节节麦在河北魏县始见,之后逐年增多,一般5～10株/平方米,高者达28株/平方米。该杂草多发生在高水肥麦田,由于适应性强、繁殖量大,防治不力,加之对种子管理不当,致使节节麦发生面积不断扩大,危害逐渐加重,严重影响小麦生产安全。 Festival of wheat is a worldwide malignant weed festival wheat in 1996 in Wei County, Hebei see, and then increased year by year, generally 5 to 10 plants / square meter, the highest of 28 plants / square meter. The weeds mostly occurred in high-water and fertile wheat fields. Due to their strong adaptability, large amount of propagation and poor prevention and control, improper management of seeds led to the continuous expansion of nodules and the increased harm to wheat, which seriously affected the safety of wheat production.