禾大壮又叫草达灭、环草丹,纯品为透明芳香液体。工业品为褐色液体,具有强烈刺激性臭味,难溶于水,可溶于多种有机溶剂,性质较稳定,对人、畜、鱼、鸟类毒性较低。常用剂型有5％、7％和10％禾大壮颗粒剂;72％、84％、91％及96％的禾大壮乳油。禾大壮是一种内吸输导型选择性除草剂。它不能杀死杂草的种子, Wo big strong called grass up off, ring grass Dan, pure transparent liquid. Industrial products for the brown liquid, with a strong irritating odor, hardly soluble in water, soluble in a variety of organic solvents, the nature of more stable, less toxic to humans, livestock, fish, birds. Commonly used dosage forms are 5%, 7% and 10% Wo big strong granules; 72%, 84%, 91% and 96% Wo Dazhuang is a kind of absorption guide selective herbicides. It can not kill the seeds of weeds,