黑龙江省北部小麦田杂草调查

Weed Survey in Wheat Fields in North Region of Heilongjiang Province

运用倒置“W”9点取样法 ,对黑龙江省北部大豆小麦轮作区小麦田做杂草调查。结果表明 ,该地区小麦田杂草有 13科 31种。其中阔叶杂草占 83.9% ,禾本科杂草占 12 .9% ,木贼科 1种 ,占3.2 %。相对多度达 10以上的杂草依次为 ,鸭跖草、香薷、卷茎蓼、问荆、野燕麦、铁苋菜、野薄荷、刺儿菜、鼬瓣花、藜、稗草、苣荬菜、垂梗繁缕等 13种。其中前 5种相对多度达 2 0以上 ,可视为当地小麦田的优势杂草。

Wheat field weed survey was conducted using an inverted W-pattern with 9 sampling points in the north region of Heilongjiang province. Of the 31 weed species recorded in wheat fields, 83.9% belonged to broad-leaved weed and 12.9% to the grass family. Based on the analysis of their relative abundance, 13 weed species were important weeds in the area. Dayflower (Commelina communis),Elsholtzid patrini,Wild buckwheat (Polygonum convolvulus),Field horsetail (Equisetum arvense) and Wild oat (Avena fatua) were abundant weeds.