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Adhesive Nanocomposite for Prolonging Foliar Retention and Synergistic Weeding and Nourishing
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2020-03-17 , DOI: 10.1002/adsu.202000010 Yanzheng Ji 1 , Mengjie Huang 1 , Jia Yan 1 , Taomei Qi 1 , Tao Li 1 , Yanhui Liu 1 , Shaoyu Lü 1 , Mingzhu Liu 1
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2020-03-17 , DOI: 10.1002/adsu.202000010 Yanzheng Ji 1 , Mengjie Huang 1 , Jia Yan 1 , Taomei Qi 1 , Tao Li 1 , Yanhui Liu 1 , Shaoyu Lü 1 , Mingzhu Liu 1
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The volatilization and leaching for most fertilizers and pesticides raise questions about the sustainability of ecosystems. To enhance the utilization of fertilizers and pesticides, pesticide–fertilizer combined nanocomposites are developed to prolong foliar retention and play a synergistic effect of weeding and nourishing for plant growth. The pesticide–fertilizer combined nanocomposites are prepared based on positive‐charge functionalized mesoporous silica and polydopamine, by chelating micronutrients (Zn2+) and loading pesticide 2,4‐D. A high loading capacity of Zn2+ (233.4 mg g−1) and 2,4‐D (17.8%) is achieved. Zn2+ and the pesticide show excellent pH‐responsive release behavior. At pH 7.0, the cumulative release is 45.35% for the pesticide after 144 h and 17% for Zn2+ after 30 days. These results reveal that the pesticide–fertilizer combined nanocomposites can remove weeds quickly and provide nutrients for crop growth in the long term. The germination rate of purslane dramatically decreases when treating with the nanocomposites, while that of corn seeds is not influenced. Excellent adhesion performance of the nanocomposites is observed on a hydrophobic surface, which can effectively reduce the risk of being washed away by rain. All the results indicate that the pesticide–fertilizer combined nanocomposites with a good synergistic effect is environmentally friendly for large‐scale application in sustainable modern agriculture.
中文翻译：
纳米复合胶粘剂，可延长叶面保持力，并具有协同除草和滋养作用
大多数肥料和农药的挥发和浸出引发了有关生态系统可持续性的问题。为了提高肥料和杀虫剂的利用率，开发了农药-肥料组合的纳米复合材料，以延长叶的保留时间，并发挥除草和营养对植物生长的协同作用。农药-肥料组合的纳米复合材料是基于正电荷官能化的介孔二氧化硅和聚多巴胺，通过螯合微量营养素（Zn 2+）和加载农药2,4-D而制备的。Zn 2+（233.4 mg g -1）和2,4-D（17.8％）的高负载能力得以实现。锌2+该农药具有出色的pH响应释放行为。在pH 7.0下，144小时后农药的累积释放量为45.35％，而Zn 2+的累积释放量为17％30天后。这些结果表明，农药-肥料组合的纳米复合材料可以快速清除杂草，并为作物长期提供营养。用纳米复合材料处理时，马齿sl的发芽率急剧下降，而玉米种子的发芽率则不受影响。在疏水表面上观察到纳米复合材料的优异粘合性能，可以有效降低被雨水冲走的风险。所有结果表明，农药-肥料组合的纳米复合材料具有良好的协同作用，对于在可持续的现代农业中大规模应用是环境友好的。
更新日期：2020-03-17
中文翻译：
纳米复合胶粘剂，可延长叶面保持力，并具有协同除草和滋养作用
大多数肥料和农药的挥发和浸出引发了有关生态系统可持续性的问题。为了提高肥料和杀虫剂的利用率，开发了农药-肥料组合的纳米复合材料，以延长叶的保留时间，并发挥除草和营养对植物生长的协同作用。农药-肥料组合的纳米复合材料是基于正电荷官能化的介孔二氧化硅和聚多巴胺，通过螯合微量营养素（Zn 2+）和加载农药2,4-D而制备的。Zn 2+（233.4 mg g -1）和2,4-D（17.8％）的高负载能力得以实现。锌2+该农药具有出色的pH响应释放行为。在pH 7.0下，144小时后农药的累积释放量为45.35％，而Zn 2+的累积释放量为17％30天后。这些结果表明，农药-肥料组合的纳米复合材料可以快速清除杂草，并为作物长期提供营养。用纳米复合材料处理时，马齿sl的发芽率急剧下降，而玉米种子的发芽率则不受影响。在疏水表面上观察到纳米复合材料的优异粘合性能，可以有效降低被雨水冲走的风险。所有结果表明，农药-肥料组合的纳米复合材料具有良好的协同作用，对于在可持续的现代农业中大规模应用是环境友好的。
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