Effects of Different Adjuvants on Weed Control Efficiency of Herbicides,Growth and Economic Traits of Tobacco
LI Xipeng
KONG Jinling
ZHONG Hui
FU Yunpeng
YAO Pengwei
FU Quanshan
HOU Zhenwu
FU Bo
LIU Youjie
WANG Jing
Abstract：In order to clarify the synergistic effects of different adjuvants on herbicides to control weeds,three adjuvants of vegetable oil,organic silicon and inorganic salt were selected and compounded with soybean post-emergence herbicides(250 g/L fomesafen+20％quizalofop-P-ethyl)with the dosage reduced by 20％,30％and 40％,respectively,and the experiment was carried out in the tobacco field of Jiaohe City,Jilin Province.The results showed that the performance of the three adjuvants in the synergistic reduction of herbicides was vegetable oil adjuvant>silicone adjuvant>inorganic salt adjuvant.The best control effect on weeds in tobacco field was obtained by the combination of plant oil adjuvant and herbicide reduction of 20％.The fresh weight control effects on gramineous weeds,broad-leaved weeds and total grass were the highest,reaching 97.14％,93.93％and 95.00％,respectively,which were significantly higher than those of conventional herbicide treatment(CK1),with increases of 15.57,10.42 and 12.49 percentage points,respectively.At 45 days after transplanting,the plant height,leaf length and leaf width of tobacco plants treated with 20％herbicide reduction combined with vegetable oil adjuvant and silicone adjuvant were significantly higher than those of artificial weeding treatment(CK2)and water treatment(CK3).The incidence of phytotoxicity in tobacco plants decreased by 1.83-3.37 percentage points after 20％—30％reduction of herbicide combined with vegetable oil adjuvant,and the photosynthetic efficiency of lower leaves was improved.Among the treatments,the yield,average price and output value of the treatment with 20％herbicide reduction and vegetable oil adjuvant were the highest,and the output value increased by 3.82％,18.53％and 16.41％respectively compared with CK1,CK2 and CK3.Therefore,through the reasonable selection and ratio of adjuvants,the output value of tobacco can be ensured while the herbicide is reduced,which is of far-reaching significance for reducing the environmental load of chemical pesticides and maintaining ecological balance.
Keywords：TobaccoHerbicideWeed control efficiencyAdjuvantEfficiency increase and quantity decrease
Publication Date：2025-05-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 78-86 )