中国稻米2025，Vol.31Issue(5)：65-70,6.DOI:10.3969/j.issn.1006-8082.2025.05.010
叶面喷施纳米硅对盐胁迫下水稻产量及生理特性的影响
Effects of Foliar Application of Nano-Silicon on Rice Yield and Physiological Characteristics under Salt Stress
摘要
Abstract
In this experiment,Nanggeng 9108 was used as the test variety.During the seedling-raising period,treatments of nano-silicon spraying(5.5 g/L)and water spraying(as control)were applied.Subsequently,the seedlings were transplanted into buckets with three salt concentration gradients(0％,0.2％,and 0.3％).The objective was to investigate the effects of foliar application of nano-silicon on rice yield and its physiological characteristics under salt stress conditions.The results showed that compared with the control,salt stress significantly inhibited rice growth,manifested by a notable decrease in photosynthetic rate(Pn),transpiration rate(Tr),intercellular CO2 concentration(Ci),and stomatal conductance(Gs),while promoting an increase in malondialdehyde(MDA)content.Under 0.2％and 0.3％salt concentration treatments,rice yields decreased by 44.75％and 74.45％,respectively.Foliar application of nano-silicon effectively promoted rice growth under salt stress,enhanced the photosynthetic capacity of leaves during the heading stage,further increased antioxidant enzyme activity,inhibited the accumulation of reactive oxygen species(ROS),and significantly reduced MDA content,thereby alleviating oxidative damage in rice.Under 0.2％and 0.3％salt concentration conditions,foliar application of nano-silicon treatment increased yield by 15.15％and 16.54％,respectively,compared to foliar application of water treatment.In summary,exogenous application of 5.5 g/L nano-silicon can alleviate the inhibitory effect of salt stress on rice growth to a certain extent and increase rice yield in saline-alkali soil.关键词
纳米硅/盐胁迫/水稻/产量/生理特性Key words
nano-silicon/salt stress/rice/yield/physiological characteristics分类
农业科技引用本文复制引用
韦任园,陈英龙,李荣凯,谭彬,崔茂亚,刘知博,刘嘉桐,韦还和,戴其根,许轲..叶面喷施纳米硅对盐胁迫下水稻产量及生理特性的影响[J].中国稻米,2025,31(5):65-70,6.基金项目
国家重点研发计划项目子课题(2022YFD1900704-05) （2022YFD1900704-05）
江苏省农业科技自主创新重点项目[(CX(23)1020)] （CX(23）
江苏省研究生科研与实践创新计划项目(SJCX24_2273) （SJCX24_2273）
