晋北荞麦田杂草发生情况调查

Investigation on the Occurrence of Weeds in Buckwheat Fields of Northern Shanxi

采用倒置"W"取样法对晋北荞麦田杂草进行调查,以明确其杂草发生情况,为荞麦田杂草综合治理提供科学依据。结果表明,晋北荞麦田杂草有17种,隶属于10科17属,其中,禾本科杂草占23.53%,藜科占17.65%,菊科占17.65%,苋科、蒺藜科、茄科、牻牛儿苗科、旋花科、车前科和木贼科均占5.88%;野稷、藜、反枝苋等是晋北荞麦田杂草群落的优势种,相对多度分别达到15.06%、13.37%、13.23%。

The inverted"W"sampling method was used to investigate the weeds in buckwheat field in northern Shanxi province,so as to clarify the occurrence of weeds and provide scientific basis for the comprehensive control of weeds in buckwheat fields.The results showed that 17 weed species,which belonged to 10 families and 17 genera,existed in buckwheat fields in northern Shanxi,of which Gramineae accounted for 23.53%,Chenopodiaceae accounted for 17.65%,Compositae accounted for 17.65%,Amaranthaceae,Tribulaceae,Solanaceae,Cerambycidae,Convolvulaceae,Plantaginaceae and Equisetaceae all accounted for 5.88%.Panicum miliaceum,Chenopodium album and Amaranthus retroflexus were the dominant weeds,with relative abundances of 15.06%,13.37%,13.23%,respectively.