摘要
为了明确氟噻草胺在大豆田的应用效果,2016年和2017年在河北省进行田间小区试验,研究氟噻草胺的除草效果和安全性。结果表明,在大豆播后苗前使用氟噻草胺进行土壤处理,能够有效防除禾本科杂草和部分小粒种子阔叶杂草,对铁苋菜的防效较低,对杂草的鲜重防效高于株数防效。使用氟噻草胺后,大豆生长正常,产量较空白对照有显著性增加。推荐氟噻草胺在大豆田的使用剂量为630~810 g a.i./hm^2,该剂量下药后28 d对杂草的合计鲜重防效达84.9%~92.0%,且对大豆安全。氟噻草胺的杀草谱和防效与乙草胺相近,可以作为乙草胺的替换产品在大豆田使用。
To develop application technology for flufenacet in soybean fields,field plot experiments were conducted to study its herbicidal efficacy and selectivity in Hebei Province in 2016 and 2017.Flufenacet sprayed as a soil treatment in pre-emergence effectively controlled grass weeds and some small-grained broadleaf weeds;it was less effective on Acalypha australis.The biomass control effect of flufenacet was higher than that based on plant number.Soybean grew normally at flufenacet doses of up to 1260 g/hm^2 in the growth period,and its yield increased significantly compared with the untreated check.The recommended dosage of flufenacet in soybean fields was 630~810 g/hm^2.Efficacy based on total weed at 28 days after treatment was 85%~92%at the recommended the dose.Flufenacet was selective to soybean.The herbicidal spectrum and efficacy of flufenacet was similar to those of acetochlor,and it could be used as a replacement for acetochlor in soybean fields.
作者
李秉华
刘小民
许贤
田胜民
王贵启
聂东兴
LI Bing-hua;LIU Xiao-min;XU Xian;TIAN Sheng-min;WANG Gui-qi;NIE Dong-xin(Key Laboratory of Crop Cultivation Physiology and Green Production of Hebei Province/Institute of Food and Oil Crops,Hebei Academy of Agriculture and Forestry Science,Shijiazhuang 050035,China;Institute for the Control of Agrochemicals,MARA,Beijing 100125,China)
出处
《杂草学报》
2020年第3期68-72,共5页
Journal of Weed Science
基金
河北省大豆产业技术体系建设专项(编号:326-0702-JSNTKSF)。
