Abstract：
Most nitrogen (N) applied to plants as fertilizer is lost through leaching. Here, nanocellulose was used in mitigating N leaching loss. Lettuce-cropped soil was treated with unmodified or Zn-modified nanocellulose (1-2% by wt) in combination with NPK, compared with urea and NPK-only treatments. Consecutive leaching, plant growth, plant N uptake, and soil nitrogen retention were assessed. Nanocellulose + NPK significantly (p ≤ 0.05) reduced N leaching, compared with urea and NPK-only. 1-and-2 wt % nanocellulose, as well as Zn-modified 1-and-2 wt % nanocellulose, reduced N leaching by 45, 38, 39, and 49% compared with urea and by 43, 36, 37, and 47% compared with NPK-only, respectively. Nitrogen leached mainly as NO3- (98.4%). Compared with urea and NPK, lettuce shoot mass was significantly (p ≤ 0.05) increased by 30-42% and by 44-57%, respectively, by all nanocellulose treatments, except for the Zn-modified 1 wt % nanocellulose. Leached N negatively correlated to biomass yield. Soil N retention was enhanced by the pristine and Zn-modified nanocelluloses between 27 and 94%. Demonstrably, nanocellulose can be utilized for mitigating N loss in soil and supporting crop production, resource management, and environmental sustainability.
摘要：
作为肥料施用于植物的大多数氮（N）通过浸出而损失。这里,纳米纤维素用于减轻N浸出损失。用未改性或Zn改性的纳米纤维素（1-2％wt）与NPK组合处理莴苣种植的土壤，与尿素和NPK治疗相比。连续浸出,植物生长,植物氮素吸收，并对土壤氮素保持率进行了评估。纳米纤维素+NPK显著(p≤0.05)降低了N的浸出，与尿素和NPK相比。1和2重量%纳米纤维素，以及Zn改性的1和2wt％纳米纤维素，与尿素相比，N浸出减少了45、38、39和49%，与仅NPK相比减少了43、36、37和47%，分别。浸出的氮主要为NO3-(98.4%)。与尿素和NPK相比，莴苣芽质量显着（p≤0.05）增加了30-42％和44-57％，分别,通过所有的纳米纤维素处理，除了Zn改性的1重量%纳米纤维素。浸出氮与生物量产量呈负相关。原始和Zn改性的纳米纤维素在27％至94％之间提高了土壤N的保留率。显而易见，纳米纤维素可用于减轻土壤中的氮素流失和支持作物生产，资源管理,和环境可持续性。
