野燕麦(Avena fatua L.)在春小麦田群体生态变化呈现规律性。禾草灵是防除野燕麦的优良药剂。本研究采用正交设计法进行田间试验,明确了许多因素能影响禾草灵防除野燕麦的效果,其中以施药期最为显著,其次是施药量。研究得出了施用禾草灵防除野燕麦的最佳技术组合为A_3B_4C_1D_2。 The ecological changes of wild Avena fatua L. in spring wheat field showed regularity. Grass Spirit is good for controlling wild oats. In this study, orthogonal design method was used to conduct field experiments, and it was clarified that many factors could affect the effect of herbaceous grass in controlling wild oats. Among them, the application period was the most significant, followed by the application rate. The study found that the best technology combination of grass weed control wild oat was A_3B_4C_1D_2.