问:我是江苏沛县的,大豆田里的马唐特别难除,请问用烯草酮效果怎么样?用多少?烯草酮可以用于大豆田防除多种禾本科杂草,对马唐、生马唐、止血马唐等杂草有良好防效,对大豆安全。一般在大豆2~3片复叶期,田间禾本科杂草基本出齐,处于3~5叶期时施药,每亩用12%烯草酮乳油35~40毫升(有效成分4.2~4.8克)加水30公斤喷雾。 Q: I am Peixian of Jiangsu Province. Crabgrass in soybean field is particularly difficult to remove. How about the effect of clethodim? How much? Clematoxin can be used to control various gramineous weeds in soybean field. Crabgrass, stop bleeding Crabgrass and other weeds have good control effect on soybean safety. Generally in the 2 to 3 leaves of soybean complex phase, grass weeds basically homogeneous Qi, at the 3 to 5 leaf stage when the application of pesticides per mu with 12% clethodim EC 35 ~ 40 ml (active ingredient 4.2 ~ 4.8 grams Add water 30 kg spray.