禾大壮又名草达灭,为美国施多福公司开发,从1981年开始由公司提供药品,供我省做药效试验,经过盆栽试验和小区试验,83年在我省五大稻区秧田和水直播田,共26个点进行多点大面积示范,在移栽本田也进行较大面积的示范取得良好效果,现将主要理化性状,杀草机理,使用方法和主要应用技术条件介绍如下: 一、禾大壮原药的理化性状 Wo Da Zhuang, also known as grass up off, developed for the United States Shi Duofu company from 1981 to provide medicines for our province to do efficacy tests, pot experiments and community trials, 83 years in our province five major rice area seedling And water direct broadcast field, a total of 26 points for a number of large-scale demonstration of a large area in the transplanting Honda also made good results, the main physical and chemical properties, herbicidal mechanism, the use of methods and the main application of technical conditions are described below : First, Wo physicochemical properties of the original drug