1试验目的“25％豆威”是由美国杜邦公司研制的一种新型的大豆广谱型除草剂，用量3－5g／667mZ，可用于大豆播后、苗前及出苗后杂草灭除。我们于1995年4－10月，对“25％豆威”进行示范试验，以摸索其在东北地区正确的使用浓度、使用时期、使用方法及使用效果，为其推广应用及 The purpose of a test “25% beans” is a new type of broad-spectrum soybean herbicide developed by the United States DuPont, dosage 3-5g / 667mZ, can be used for soybean sowing, pre-emergence and post-emergence weeds. In April-October 1995, we conducted a demonstration test on “25% soybeans” to explore its correct use concentration, use period, application method and effect in Northeast China and its application