3种除草剂与肥料混施对海滨雀稗及交播黑麦草生长的影响

2009-2010年在江苏小洋口乡村俱乐部进行田间试验,旨在明确除草剂嗪磺隆、磺酰磺隆、敌草隆与复合肥混施后对海滨雀稗（Paspalum vaginatum）及交播黑麦草(Lolium perene)生长的影响。结果表明,海滨雀稗休眠前单施嗪磺隆0.027 kg ai/hm2、磺酰磺隆0.01 kg ai/hm2及与复合肥250 kg/hm2（含N∶P∶K为18∶6∶12）混施,对海滨雀稗草坪叶色及返青无影响。施敌草隆1.6 kg ai/hm2,2周内草坪叶片轻度失绿,草坪返青正常。敌草隆与肥料混施后,2周内草坪叶片中度失绿,来年返青比对照迟5 d。草坪完全返青后单施嗪磺隆0.027 kg ai/hm2及与肥料混施,药后3周黑麦草死亡,海滨雀稗叶色及密度正常。单施磺酰磺隆0.01 kg ai/hm2及与肥料混施,药后3周黑麦草死亡,海滨雀稗叶片极轻微至轻微失绿。5~6周全区草坪叶色及密度正常。施敌草隆1.6 kg ai/hm2后2周黑麦草死亡,海滨雀稗叶片中度失绿伴密度轻微受损。药后7周全区草坪叶色渐趋正常,但密度低于对照。敌草隆与肥料混施后2周黑麦草死亡,海滨雀稗叶片严重失绿,6周局部死亡,9周全区草坪叶色渐趋正常,密度显著低于对照。

Effect of application of herbicides with fertilizer on growth of seashore paspalum and seashore paspalum overseeded by perennial ryegrass

Field experiments were conducted from 2009 to 2010 to determine the injuring of perennial ryegrass(Lolium perene cv.Overseed 2#) overseeded in seashore paspalum(Paspalum vaginatum cv.Salam) by mixing application of herbicides with fertilizer(The trade product contained 4.5 g/m2 of N plus 1.5 g/m2 of P2O5 and 3 g/m2 of K2O).This study showed that Chlosulfuron at 0.027 kg ai/ha and sulfosulfuron at 0.01 kg ai/ha resulted in excellent seashore paspalum safety when applied alone or mixing with fertilizer in Nov...