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快灭灵４０ＤＦ是美国ＦＭＣ公司研制的新型禾谷类作物田除草剂。在小麦４～６叶期，喷施快灭灵４０ＤＦ２２．５ｇ／ｈｍ２对麦田新的优势阔叶草种（野老鹳草、泽漆）具有较好的防效，对大巢菜和繁缕的防效为８０％～８５％，但是对禾本科杂草无效；快灭灵４０ＤＦ与异丙隆５０ＷＰ混配使用，可以提高含禾本科杂草、繁缕和大巢菜的总草防效，小麦增产显著；快灭灵４０ＤＦ与甲黄隆或者巨星混配后，对阔叶草（野老鹳草、泽漆、大巢菜和繁缕等）的防效达９０％以上；施用快灭灵４０ＤＦ４５～６７．５ｇ／ｈｍ２，小麦叶片出现白色斑点中毒症状，但不影响小麦产量。
Kill Ling 40DF is the United States FMC company developed a new crop of cereal herbicides. In wheat 4 ~ 6 leaf stage, spraying fast off spirit 40DF22.5g / hm2 on the wheat field new dominant broadleaf grass (wild geranium, Ze lacquer) has good control effect on the large vetch and chickweed Control effect is 80% ~ 85%, but the grass weeds invalid; fast off spirit 40DF and isoproturon 50WP mixed use, can improve grass weeds, chickweed and big vetch total herb control effect, The yield of wheat increased significantly. After the combination of julomene 40DF and julianlong or giant star, the control effect on broadleaf grass (wild geranium, lacquer, big vetch and plumbum, etc.) reached more than 90% 40DF45 ~ 67.5g / hm2, white spot poisoning symptoms of wheat leaves, but does not affect the wheat yield.