河南农业科学2026，Vol.55Issue(2)：89-97,9.DOI:10.15933/j.cnki.1004-3268.2026.02.010
7种助剂对戊唑醇防治稻曲病的减量增效作用
Reduction and Synergistic Effect of Seven Adjuvants on the Control of Rice False Smut by Tebuconazole
摘要
Abstract
To investigate the synergistic enhancement effect of different adjuvants on the control of rice false smut by tebuconazole,seven novel adjuvants were selected including Nanosilica(NMG),Mairun(MR),Keousen(KOS),Maifei(MF),Benniu(BN),Jijian(JJ),and Chaoniu(CN).Firstly,the improvement in spreading performance of reduced tebuconazole by the addition of adjuvants was quantitatively analyzed using the contact angle measurement method.Subsequently,greenhouse pot experiments with artificial inoculation and fungicide spraying,as well as field trials under natural conditions,were conducted.A comprehensive evaluation of the synergistic control effect of reduced tebuconazole with adjuvants was performed.The results showed that after 50%reduction of tebuconazole combined with each adjuvant,the contact angle of the solution on rice leaves significantly decreased,and the spreading performance was markedly improved.Under conditions of artificial inoculation with rice false smut,adding the seven adjuvants to 50%reduced tebuconazole increased the disease inhibition by 18.0%to 71.3%compared with the single 50%reduced tebuconazole treatment.Among them,the CN combination treatment exhibited the best inhibition effect,with a inhibition rate of 85.5%.Field control results indicated that 30%reduced tebuconazole combined with CN achieved the highest control efficacy against rice false smut,reaching 87.1%,which showed a significant increase of 48.6%compared with the 30%reduced tebuconazole alone and was comparable to the standard tebuconazole dose alone(86.6%).In addition,the control efficacy of 30%reduced tebuconazole combined with MF,JJ,MR,or BN showed no significant difference compared with the standard tebuconazole dose alone.These results indicate that the addition of novel adjuvants can achieve enhanced control efficacy with reduced fungicide dosage against rice false smut,and the nanoscale CN adjuvant shows particularly pronounced synergistic effects,providing a basis for environmentally friendly disease management in rice.关键词
稻曲病/助剂/戊唑醇/接触角/减量增效/田间防效Key words
Rice false smut/Adjuvant/Tebuconazole/Contact angle/Reduction and synergistic effect/Field control efficacy分类
农业科技引用本文复制引用
李新怡,邓清超,王佐乾,郭晨晨,许婷,常向前,蔡旋,杨小林,张舒,吕亮..7种助剂对戊唑醇防治稻曲病的减量增效作用[J].河南农业科学,2026,55(2):89-97,9.基金项目
国家自然科学基金青年项目(32202399) （32202399）
湖北省重点研发计划项目(2021BBA236) （2021BBA236）
湖北省自然科学基金项目(2023AFB769) （2023AFB769）
