黑龙江省东部地区向日葵田杂草调查初报

Preliminary Report on Weed Survey in Sunflower Field in East Region of Heilongjiang Province

采用倒置"W"9点取样法,对黑龙江省东部地区向日葵田杂草进行调查。结果表明:该地区向日葵田杂草有20科55种,其中阔叶杂草17科43种占78.2%,禾本科杂草9种占16.4%,其它3种(鸭跖草科、百合科、木贼科各1种)占5.5%。一年生杂草30种占54.5%,一年生或越年生杂草7种占12.7%,多年生杂草18种占32.7%。出现频率50%以上的杂草10种,分别为稗草、藜、铁苋菜、香薷、金狗尾草、苣荬菜、苍耳、问荆、反枝苋、鸭跖草,这10种杂草可视为东部地区向日葵田的主要优势杂草。

Sunflower field weed survey was conducted using an inverted W-pattern with 9 sampling points in the east region of Heilongjiang province.The results showed 55 weed species recorded in sunflower fields.There were 43 broad-leaved weed species accounted for 78.2%,9 the grass family for 16.4%,3 others for 5.5% among 55 weed species.30 species of annual weeds in 54.5%,7 species of annual or more years old weeds in 12.7%,18 species of perennial weeds accounted for 32.7%.Appear frequency of 10 weeds were over 50%,they were Barnyard grass（Echinochloa crus-galli）,Goosefoot（Chenopodium album）,Copperleaf（Acalypha australis）,Chinese Mosla Herb（Elsholtzia ciliata）,Gold Setaria（Setaria glauca）,Field Sowthistle Herb（Sonchus brachyotus）,Siberia Cocklebur（Xanthium strumarium）,Bottle Brush Herb（Equisetum arvense）,Redroot Pigweed（Amaranthus retroflexus） and Dayflower（Commelina communis）.Those 10 weed species were important weeds in sunflower field in the area.