中国农科院烟草所:生物源纳米碳(BNC)协同花生根际微生物组实现减氮30%不减产(原标题:Bio-nano-carbon from agricultural waste synergizes phyllosphere microbiome for nitrogen use efficiency)
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中国农科院烟草所病虫害绿色防控创新团队首次揭示微量生物源纳米碳(BNC)通过HY5介导的地上-地下信号传导与根际微生物组重塑,实现花生氮肥减施30%不减产的全新机制。BNC通过增强光合电子传递、缓解氧化胁迫,激活硝酸盐与铵转运蛋白促进氮吸收,并重编程根系分泌物招募硝化螺旋菌、芽单胞菌等氮循环微生物。田间试验氮肥利用率提高16.0%、温室气体排放降低34.8%。BNC源自农业废弃物、成本极低、可降解、可穿透植物屏障,有望作为农药或生物农药的纳米载体,实现靶向递送与缓释减量。
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