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。

Study on Composition of Culture Medium for Indoor Ecological Lawn

The compositions of soilless culture media for indoor lawns were studied through the determination of quality indexes （grass height, clipping weight, leaf width, density, lawn color and uniformity） of Festuca rubra L. and Perennial Lolzum perenne L lawns. The results showed that composition 4 （black turf 1.2 L＋vermiculite 0.3 L＋ceramsite 0 L） is not suitable for the cultivation of indoor lawns. Composition 1 （black turf 0.3 L＋vermiculite 0.75 L＋ceramsite 0.45 L） and composition 2 （black turf 0.6 L＋vermiculite 0.6 L＋ceramsite 0.3 L） are suitable for indoor cultivation of F. rubra; and Perennial L. perenne turned yellow in all the tested media, and therefore, the media tested in this study are not suitable for indoor cultivation of Perennial L. perenne.