两熟田麦后免耕机械直播水稻,可以省去育秧、插秧两个环节,大大提高农业劳动生产率,适合规模经营的家庭农场采用。但直播田草害严重,稍有疏忽,便遭失败。在干土表面喷布除草剂,封闭土层,是一种操作方便,工效高,喷药易于周到均匀的除草方法。1986年6月初,在里下河粘土地区的建湖县试种麦后免耕机械直播水稻,同时采用4种除草剂进行了干土表面喷洒灭草试验。供试的药剂有:南开大学元素所提供的25％胺草磷乳油、孟山都 Two lines of field after wheat, no-tillage mechanical direct-seeded rice, you can save seedling, transplanting two links, greatly improving agricultural labor productivity, suitable for large-scale family farms. But the broadcast field grass serious damage, a slight negligence, they failed. In the dry soil surface spray herbicides, closed soil, is a convenient operation, high efficiency, spraying easy and thoughtful and uniform method of weeding. In early June 1986, rice was planted in no-tillage wheat in Jianhu County of Lixiahe Clay, and four herbicides were used to spray the weeds on dry soil. The test agents are: Nankai University elements provided by 25% Amoxicillin, Monsanto