江苏农业学报2025，Vol.41Issue(5)：883-892,10.DOI:10.3969/j.issn.1000-4440.2025.05.007
微量元素肥料对水稻噻呋酰胺吸收及纹枯病防治效果的影响
The impact of micronutrient fertilizers on the uptake of thifluzamide and the control of sheath blight in rice
摘要
Abstract
This study employed both hydroponic and soil cultivation methods to investigate the effects of three micronutrient fertilizers(lanthanum,selenium and boron)on the uptake of thifluzamide by the rice plants.Additionally,this study analyzed the impact of combining these micronutrient fertilizers with thifluzamide on the ac-tivity of antioxidant enzymes in rice and the efficacy of sheath blight control.The results showed that under hydro-ponic conditions,the thifluzamide content in aboveground parts of rice treated with La1(0.5 mg/L thifluzamide+43.3 mg/L LaNO3·6H2O),B1(0.5 mg/L thifluzamide+0.286 mg/L H3BO3),and Se2(0.5 mg/L thifluzamide+0.10 mg/L Na2SeO3)was significantly higher than that in the 0.5 mg/L thifluzamide control group.Moreover,the relative dis-ease severity of sheath blight in La1 treatment,B1 treatment,and Se2 treatment was significantly lower than that in the 0.5 mg/L thifluzamide control and other treatments(P<0.05).The activities of superoxide dismutase(SOD),peroxidase(POD),chitinase,and β-1,3-glucanase in the aboveground parts of rice in La1 treatment,B1 treatment,and Se2 treat-ment were significantly higher than those in the 0.5 mg/L thifluzamide control group.Under soil cultivation conditions,the Se4 treatment(14.56 g thifluzamide(24%)+0.2 g Na2SeO3),La4 treatment(14.56 g thifluzamide(24%)+0.6 g LaNO3·6H2O),and B4 treatment(14.56 g thifluzamide(24%)+0.1 g H3BO3)exhibited minimal impact on rice seed germination.Twenty days after seed dressing,compared with the 14.56 g/kg thifluzamide(24%)control,the thifluzamide content in the aboveground parts of rice in the Se4,La4,and B4 treatments increased by 20.36%,36.72%,and 36.00%,respectively(P<0.05).Therefore,appropriate application of lanthanum,selenium,and boron micronutrients in combina-tion with thifluzamide can enhance the uptake and translocation of thifluzamide in rice plants,increase the activity of antiox-idant enzymes in rice plants,and thereby improve the control efficacy of thifluzamide against rice sheath blight.The findings of this study provide a theoretical basis for the efficient utilization of thifluzamide and the control of rice sheath blight,and are of great significance for advancing pesticide reduction and efficacy enhancement.关键词
微量元素肥料/纹枯病/噻呋酰胺/水稻Key words
micronutrient fertilizers/sheath blight/thifluzamide/rice分类
农业科技引用本文复制引用
许朝荣,万群,王亚,吕康,田岳,葛静,程金金,余向阳..微量元素肥料对水稻噻呋酰胺吸收及纹枯病防治效果的影响[J].江苏农业学报,2025,41(5):883-892,10.基金项目
江苏省碳达峰碳中和科技创新专项基金项目(BE2022424) （BE2022424）
江苏省农业科技自主创新基金项目[CX(23)3009] （23）
国家重点研发计划项目(2021YFD1700803) （2021YFD1700803）
