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笔者随同中国农垦化学除草剂考查团赴美国考查。现仅就美国农户主要作物的化学除草剂应用情况介绍如下。 一、麦田: 美国中北部为大小麦和玉米轮作区,主要害草是野燕麦和多种阔叶杂草。防除野燕麦主要用燕麦畏,整地时施入土壤。然后播种,用药量为1.0～1.5kg/公顷(有效成分量),或秋天整地施肥同时,施多用颗粒剂,用量为1.5kg/公顷,控制野燕麦草达95％,干
The author along with China Nongken chemical herbicide test mission to the United States test. The application of chemical herbicides to the main crop of US farmers is now described below. First, the wheat fields: North and Central America for the wheat and wheat rotation area, the main weeds are wild oats and a variety of broadleaf weeds. Control of wild oats mainly with oatmeal, soil into the land preparation. And then sowing, the dosage is 1.0 ~ 1.5kg / ha (active ingredient), or fertilizing fertilizer at the same time in autumn, applying multiple granules, the dosage is 1.5kg / ha, wild oat grass control 95%, dry