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作者1992～1995年对河北省东部干旱、半干旱地区主要农田杂草进行了调查。共采集农田杂草25科,51种;采用两因素乘积优势度和群落优势杂草率对数据分析,客观地找出该地区18种优势杂草和21种主要杂草群落,并对群落的层片分布作了初步分析。
From 1992 to 1995, the author investigated the main farmland weeds in the arid and semi-arid areas of eastern Hebei Province. A total of 25 families and 51 species of farmland weeds were collected. Based on the data analysis of the two-factor product dominance and the community dominant weed rate, 18 dominant weeds and 21 major weed communities in the area were objectively identified. Polaroid distribution made a preliminary analysis.