近年来，移栽油菜田草害日益严重，已成为制约油菜高产的重要因子。为有效地控制草害，1988～1996年对本地移栽油菜田杂草发生规律及化除技术进行了研究，现将结果整理如下。1研究方法1．1杂草发生规律1．1．1杂草种类：1988～1991年于杂草发生基本定局时，分地区选择不同茬口 In recent years, transplanting rape field grass growing increasingly serious, has become an important factor restricting the high yield of rapeseed. In order to effectively control weeds, we conducted a study on the occurrence and removal of weeds in locally transplanted rape fields from 1988 to 1996, and the results are summarized as follows. 1 research methods 1.1 law of occurrence of weeds 1.1.1 weed species: 1988 to 1991 in the basic set of weeds, the choice of different stubbles