摘要
为研究除草剂对狗牙根(Cynodon dactylon)草坪内鸡眼草(Kummerowia striata)的防除效果,用72%2,4-D丁酯乳油、40%苞米兴悬浮剂、36%苄·二氯可溶性粉剂、56%二甲四氯钠可溶性粉剂、40%磺草灵水剂、41%草甘膦异丙胺盐水剂、阔草净水剂、暖草能可溶性粉剂、恶阔净乳油共9种除草剂对鸡眼草进行防除,在施药后3、6、12、20、30 d分别观察记载鸡眼草的外观状态,并计算药效指数、株防效,施药后30 d计算鲜重防效,并在施药后3、6、12、20、30、45 d分别观测记载狗牙根生长情况。结果表明,9种除草剂均可对鸡眼草实现一定程度的防除。在施药30 d后,9种除草剂中对鸡眼草防除药效指数、株防效和鲜重防效最好的都是恶阔净乳油和暖草能可溶性粉剂,其药效指数分别为99.07%和98.77%,株防效分别为93.50%和91.50%,鲜重防效分别为86.61%和85.78%;施药后,恶阔净乳油对草坪草狗牙根生长没有影响,其他除草剂都有不同程度的影响。研究结果表明,恶阔净乳油可实际运用于狗牙根草坪鸡眼草的防除。
The control effects of nine herbicides（ 72% 2,4-D butylate EC,40% Ethachlor ＋ atrazine SC,40% Bensulfuron-methyl ＋ quinclorac SP,56% MCPA-Na SP,40% Asulam AS,41% Glyphosate isopropamide AS,Benazolinethyl AS,Warm-season Turfgrasses Herbicides SP,and Worst broad leaf herbicides EC） on Kummerowia striata in Cynodon dactylon lawn were assessed. The efficacy indices and the control effects of the plant were recorded after 3,6,12,20,and 30 days,the control effects of fresh weight were recorded after 30 days,and the influence on the growth of C.dactylon was observed on 3,6,12,20,30,and 45 days after the herbicide application. The results showed that Worst broad leaf herbicides EC and Warm-season Turfgrasses Herbicides SP resulted in the highest efficacy index,the greatest control effect on the plant,and the greatest control effect on the fresh weight of K. striata in C. dactylon lawn（ efficacy indices,99. 07% ＋ 0. 09% and 98. 77% ＋ 0. 15%; control effects of the plant,93. 50% and 91. 50%; control effects on the fresh weight,86. 61% and 85. 78%,respectively）. No injury to the growth of C. dactylon was observed after treatment with Worst broad leaf herbicides EC,but the others caused ＂Minimal injury＂or ＂Slight injury＂or ＂Visible injury＂to the lawn. It was concluded that Worst broad leaf herbicides EC could be used to control K. striata in C. dactylon lawns.
出处
《草业科学》
CAS
CSCD
2018年第1期69-75,共7页
Pratacultural Science
基金
国家级星火计划项目(2015GA770016)
湖南省科技计划项目(11FJ3164)
湖南省教育厅优秀青年项目(12B093)
湖南省"十二五"重点建设学科作物遗传与育种学(湘教通[2011]76号)
洞庭湖生态经济区建设与发展湖南省协同创新中心资助项目(湘教通[2015]351号)
关键词
除草剂
狗牙根草坪
鸡眼草
防除效果
herbicides
Cynodon dactylon lawn
Kummerowia striata
control effect
作者简介
通信作者：王云（1974-）,男,湖南澧县人,教授,硕士,主要从事资源与环境研究.E-mail：wangyun1211@126.com
