苏州城区公共草坪杂草发生与化学防除试验  

Weed Occurrence and Chemical Control Test in Suzhou City's Public Lawn

作　　者：邱学林[1] 朱陈[1] 

机构地区：[1]苏州农业职业技术学院,江苏苏州215008

出　　处：《杂草科学》2013年第3期16-20,共5页Weed Science

摘　　要：采用五级草害目测调查法对江苏省苏州市区公共草坪绿地杂草发生危害进行调查,结果表明,苏州城区草坪绿地杂草发生危害较为普遍。调查记录到草坪绿地害草种类67种,草害发生量6.3株/m2,相对多度7.9%,相对盖度10.4%,相对高度和发生频率均为100%,杂草总的危害等级达到4级以上。造成危害的主要杂草种类有14种,区域性发生危害的杂草有15种。对三叶草草坪的禾本科杂草危害,可采用高效氟吡甲禾灵或大杀禾防治,除草效果可达90%以上。对狗牙根或高羊茅草坪阔叶杂草危害,可采用2甲4氯、氯氟吡氧乙酸、二氯吡啶酸等的其中一种进行化学防治,除草效果可达85%以上;但因草坪草害群落中发生的杂草种类不同,在选择除草剂品种时也应有针对性,或在处理时添加SD助剂以提高除草效果。Weed occurrence and damage at Suzhou urban public green lawn was assessed using five-grade weed visual survey method.Presence of weeds in this public green lawn is very common.There were 67 weed species with a density of 6.3 stems/m2,relative abundance of 7.9％,relative coverage of 10.4％,and a relative height and relative frequency of 100％.The total weed hazard level was above the 4th grade.Mainly 14 weeds were discriminated and 15 were found to pose regional hazard.Haloxyfop-R-methyl （600 g/hm2） or Ping An-14 （900 g/hm2）,applied to the clover lawn controlled at least 90％ of the grass weeds.MCPA,fluroxypyr,or clopyralid may be used to control the broadleaf weeds in the bermudagrass or tall fescue lawn,with an efficacy of at least 85％.Different weed floras were observed in the lawns thus herbicides should be selected according to their spectrum of control and SD added as a way to improve their control.

关 键 词：公共草坪 杂草发生 化学防除 

分 类 号：S451[农业科学—植物保护]