湘西南地区紫羊茅草坪春季杂草种类调查及防除效果研究

湘西南地区紫羊茅草坪春季杂草调查结果表明,湘西南地区紫羊茅草坪中的春季杂草主要有12个科16种,禾本科杂草为白茅、白顶早熟禾;阔叶杂草为空心莲子菜、小飞蓬、一年蓬、半边莲、野艾蒿、直立婆婆纳等。其中一年蓬、小飞蓬、白茅、白顶早熟禾、半边莲、婆婆纳、野艾蒿、车前草、空心莲子菜、香附子、剪刀草等为主要杂草,为重要的防除对象;酢浆草、佛甲草、窃衣、天胡荽、卷耳等为次要杂草。防除效果研究表明,0.5%二甲四氯钠20mL/m2+0.15%高效盖草能20mL/m2比0.5%二甲四氯钠20mL/m2单独使用对阔叶杂草有效;2%猪殃净40mL/m2对紫羊茅草坪中的阔叶杂草有很好的防治效果,可以选择;0.1%高效盖草特30mL/m2+0.15%高效盖草能45mL/m2+2%猪殃净50mL/m2+0.5%二甲四氯钠30mL/m2的杂草防除效果最为理想,但不宜在紫羊茅草坪中使用。试验药剂单用或者混用都不能防除窃衣、卷耳。

Species Investigation and Control Effect of Spring Weeds in Festuca rubra L. Lawn in the Southwest Area of Hunan

The investigation of spring weeds indicated that there were 16 species and 12 families in Festuca rubra L.lawn in the south-west area of Hunan.They were Imperata cylindrica and Poa acroleuca of gramineous weeds,Alternanthera philoxeroides,Conyza canadensis,Erigeron annuus,Lobelia chinensis,Artemisia lavandulaefolia,Veronica arvensis,etc.of broadleaf weeds.Erigeron annuus,Conyza canadensis,Imperata cylindrica,Poa acroleuca,Lobelia chinensis,Veronica arvensis,Artemisia lavandulaefolia,Plantago asiatica,Altern...