摘要
采用倒置"W"9点取样法,对吉林省西北部地区向日葵田杂草进行了调查。结果表明,该地区向日葵田杂草有19科49种,其中阔叶杂草16科36种占73.5%,禾本科杂草10种占20.4%,其他3种(列当科1种、木贼科2种)占6.1%。一年生杂草35种占71.4%,一年生或越(多)年生杂草3种占6.1%,多年生杂草11种占22.4%。相对多度达10以上的杂草有4科11种,按相对多度由高到低的次序排列,分别为列当、藜、刺藜、反枝苋、稗草、野稷、芦苇、苍耳、狗尾草、苣荬菜、虎尾草,可视为吉林省西北部地区向日葵田的主要杂草。
Weeds occurrence in sunflower field in the Northwest region of Jilin Province were investigated via a inverted ＂W＂ shape 9 points sampling method. The results showed that there are total 19 families 49 species weeds in sunflower field. Among then, 16 families 36 species of broad - leaf weed contains 73.5% of the total weeds, 10 species of gramine- ous grass contains 20.4% ,3 others species（ 1 species belongs to Orobanchaceae,2 species belong to Equisetaceae） con- tains 6.1%. 35 species of annual weeds contains 71.4%, 3 species of biennial weed contains 6.1%, 11 species of peren- nial weed contains 22.4%. Relative abundance value of 4 families 11 species weed is above 10. According to the order from high to low of the relative abundance value, there are Orobanche coerulescens, Chenopodium album, Chenopodium aristatum ,Amaranthus retroflexus , Echinochloa crus - galli , P anicum miliaceum var. ruderale , Phragmites communis , Xan- thium sibiricum, Setaria viridis, Sonchus brachyotus, Chloris virgata are the main harmful weeds in sunflower field in the northwest region of Jilin Province.
出处
《杂草科学》
2012年第4期34-37,共4页
Weed Science
基金
国家现代农业产业技术体系向日葵项目(编号:nycytx-21-B01)
关键词
向日葵
杂草
调查
倒置“W”9点取样法
sunflower
weed
survey
inverted ＂W＂ shape 9 points sampling method
