[目的]筛选黄芩田适用的土壤处理除草剂.[方法]通过种子萌发试验和盆栽试验,室内测定了 9种土壤处理除草剂对黄芩的安全性,并在此基础上进行了田间药效试验.[结果]在种子萌发试验中,48％仲丁灵乳油(450～900.00 g a.i./hm2)和330 g/L二甲戊灵乳油(309.38～618.75 g a.i./hm2)处理的黄芩种子发芽率与对照相比无显著差异;在室内盆栽试验中,48％仲丁灵乳油(450～1800.00 g a.i./hm2)和330 g/L二甲戊灵乳油(309.38～1237.5 g a.i./hm2)处理与对照相比无显著差异.田间药效试验表明:药后15 d,330 g/L二甲戊灵乳油(495～1237.5 g a.i./hm2)和48％仲丁灵乳油(720～1800.00 g a.i./hm2)处理的黄芩田杂草可以达到100％的总体株防效.药后45 d,总体株防效仍能保持在83.24％以上,总鲜质量防效在89.14％以上,且在田间无药害产生.[结论]48％仲丁灵乳油和330 g/L二甲戊灵乳油可用于防除黄芩田杂草.
Safety screening and field control efficacy of soil-treated herbicides in Scutellaria baicalensis Georgi fields
[Aims]The study aims to screen out herbicides for soil treatment used in Scutellaria baicalensis Georgi fields.[Methods]The safety of 9 soil-treated herbicides to S.baicalensis Georgi was conducted through seed germination test and laboratory pot test.Based on these evaluations,a field efficacy test was conducted.[Results]In the seed germination test,the germination rate of S.baicalensis Georgi treated with butralin 48％EC(450-900.00 g a.i./ha)and pendimethalin 330 g/L EC(309.38-618.75 g a.i./ha)showed no significant difference compared with the control.In the laboratory pot test,there was no significant difference in the germination rate of SS.baicalensis Georgi seeds treated with butralin 48％EC(450-1800.00 g a.i./ha)and pendimethalin 330 g/L EC(309.38-1237.5 g a.i./ha)compared with the control.The field efficacy trial showed that the treatments of pendimethalin 330 g/L EC(495-1237.5 g a.i./ha)and butralin 48％EC(720-1800.00 g a.i./ha)could achieve 100％overall plant control on day 15 after application.The overall plant control effect remained above 83.24％on day 45 after treatment,and the total fresh weight control effect was above 89.14％,with no phytotoxicity in the field.[Conclusions]Butralin 48％EC and pendimethal 330 g/L EC can be used to control weeds in S.baicalensis Georgi fields.
万方数据
维普
