The result indicated that, 2,4-D butylate and carbamide, MCPA and carbamide were mixed using in wheat field between return green period and draw blur period.

• 试验结果表明:2,4-D 丁酯与尿素和2 甲4 氯与尿素在冬小麦返青、拔节期间合理混施,不仅可以促进小麦生长发育,改善农艺性状,提高小麦产量,且对杂草有良好的防除效果。