The Galium aparine L. and the Veronica didyma Tenore and the Descurainia Sophia (L) schur and the Copsella bursa-pastoris (L) Medic and the Arenaria serpyllifolia L.are 5 superior weed species of wheat field in Guanzhong west area of Shaanxi.

• 猪殃殃、婆婆纳、播娘蒿、荠菜及蚤缀为陕西关中西部麦田5种主要优势种杂草,其发生面积大,危害普遍严重。