为探索水稻生产适用的高效、可推广的叶面阻控剂,本研究选用4种叶面阻控剂（黄腐酸钾、硅肥、锌肥和硒肥）,探究其对水稻生长及产量的影响,以及对镉在水稻各器官中的富集和转运的影响。结果表明,在水稻分蘖期和灌浆期分别喷施4种叶面阻控剂后,水稻株高、分蘖数和千粒重均有不同程度增加,与空白对照相比,叶面阻控剂处理的水稻产量较空白处理增产0.34%~4.83%。叶面阻控剂施用后,水稻根部、茎部、叶部和籽粒中的镉含量均有所下降,所有处理籽粒中镉含量均符合食品安全标准。综合水稻产量与降镉效果,建议在轻度镉污染稻田采取叶面喷施硅肥技术措施阻控水稻镉吸收和转运,以实现水稻安全生产。

To explore efficient and scalable foliar resistance control agents in rice production, 4 foliar inhibitors (potassium fulvic acid, silicon fertilizer, zinc fertilizer, and selenium fertilizer) were selected to investigate its effects on rice growth and yield, as well as the effect of accumulation and transport of cadmium in various organs of rice. The results showed that after spraying four foliar inhibitors during the tillering and grain filling stages of rice, the plant height, tiller number, and thousand grain weight of rice increased to varying degrees. Compared with the blank control, the yield of rice treated with foliar inhibitors increased by 0.34% to 4.83%. After the application of foliar inhibitors, the cadmium content in the roots, stems, leaves, and grains of rice decreased, and the cadmium content in all treated grains met the national food safety standards. Based on the comprehensive analysis of rice yield and cadmium reduction effect, it is recommended to adopt foliar spraying of silicon fertilizer technology in mildly cadmium polluted rice fields to control the absorption and transport of cadmium in rice and achieve safe rice production.