黑龙江省玉米栽培面积较大,但是,因杂草危害而减产的玉米田为数不少。我们主要根据当前大量施用除草剂的情况下,开展了玉米田施用化学除草剂的灭草效果及残效期的研究。材料和方法试验于1983年5月至1985年1月在东北农学院香坊试验站及院部温室进行。试验地土壤为黑土,玉米播种面积为4亩,前茬为小麦,伏翻伏耙春耢地。玉米收获后秋翻秋耙第二年(1984)连种玉米。 Heilongjiang Province, corn cultivation area larger, but because of the weed damage and reduced the number of corn fields. We conducted research on the herbicide effect and residual phase of chemical herbicide application in corn fields mainly under the current heavy application of herbicides. Materials and Methods The experiment was conducted from May 1983 to January 1985 at Xiangfang Experimental Station of Northeast Agricultural College and the conservatory greenhouse. The test soil is black soil, corn sown area of ​​4 acres, the former crop of wheat, volt rollaway Haruka. Autumn corn harvester Autumn Harvest the second year (1984) with corn.