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通过分析１９８６～１９８７年、１９９５～１９９７年２次杂草普查资料，结果表明：化除１０ａ，油菜田草害情况出现显著变化：总体危害程度有所降低，但草害现状仍旧严重；靶标杂草看麦娘数量大幅下降，非靶标杂草急剧上升；群落结构趋于复杂，单优群落田块数量减少，双优或多优群落田块数量增加。据此提出了加强草情监测、加强针对性化除、加强农业防除的现阶段草害控制对策。
By analyzing the data of two weeds censuses from 1986 to 1987 and from 1995 to 1997, the results showed that: In addition to 10a, there was a significant change in the grass pests in rape fields: the overall damage degree was reduced, but the status of grass damage was still serious; Anemarrhena astigmatism decreased drastically and non-target weeds rose sharply. The community structure tended to be complex. The number of field plots in single-superior communities decreased, and the number of field plots in double-gifted or multi-gifted communities increased. Based on this, we proposed measures to strengthen grassland monitoring, intensify targeted elimination and strengthen grass-roots control at the present stage of agricultural prevention and control.