将化学竞赛成果转化为具有农业特色的实验项目“纳米乳液的制备、表征及粒径调控”，并引入到物理化学实验教学中。通过实验使学生掌握纳米乳液的制备表征方法并研究制备因素对性质的影响，推动了农科和理科的融合渗透，培养了学生的跨学科思维，提高了科学素养。引导学生深刻认识纳米乳液对于减少农药使用量、保护生态环境的重要意义，关注国家粮食安全和食品安全等战略需求，加强了学生的绿色发展意识，激发了学生服务三农的责任感。

农药作为农作物健康的“守护者”，能有效防控病虫害、减少作物损失，在保障粮食安全和社会稳定方面发挥着不可替代的作用。然而，传统农药使用普遍存在利用率低和环境污染严重等问题。化学凭借其方法与技术体系的独特优势，通过绿色分子设计、助剂调控界面沉积、智能控释递送体系的构建以及农药残留与安全性评估等关键途径，为农药的绿色发展提供关键方案。这些技术分别致力于从源头降低农药生态毒性、破解药液在叶面沉积与持留难题、实现精准按需释放，并系统评估与管控残留风险，协同促进了农药的高效利用与生态环境相容性。展望未来，化学将进一步融合人工智能、合成生物学、材料科学等多学科技术，构建全链条绿色农药技术体系，为推动农业可持续发展和全球农业绿色转型提供坚实的科学技术支撑。

The double perovskite oxide La_0.6Sr_1.4Ni_0.4Co_1.6O₆ (LSNC) was synthesized using a simple sol-gel method, followed by physical mixing with S/N co-doped graphene (S/NG) to prepare LSNC@S/NG, thereby achieving excellent electrical conductivity and abundant active sites. When the mass fraction of S/NG was 15%, LSNC@S/NG-15% exhibited the largest specific surface area (11 m²·g^-1) and electrochemical double-layer capacitance (71.14 mF·cm^-2), which were significantly superior to those of the pristine perovskite. In linear sweep voltammetry (LSV) tests, this optimized composite demonstrated the best electrocatalytic activity for both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), achieving high anodic and cathodic current densities of 356.0 mA·cm^-2 (termination potential: 1.97 V) and 300.4 mA·cm^-2 (termination potential: 0.37 V), respectively. This remarkable enhancement in performance is attributed to the strong synergistic effect between the catalytically active LSNC particles and the highly conductive, defect-rich S/NG support, which facilitates rapid charge transfer and provides a larger density of accessible active sites.