背景:常规肥料的低回收率仍然是全球玉米生产的重要瓶颈。特别是,磷酸盐施肥,锌在土壤中容易沉淀,降低了玉米对磷和锌的回收。
结果:本研究旨在研究ZnO纳米颗粒(ZnONPs)和磷(P)对玉米作物生长的协同作用,产量,在随机完全封闭设计(RCBD)中,氧化锌种子包衣和叶面施用下的养分吸收。然而,植物接受两种ZnONPs水平,包括0.5和12Kgha-1,用两种P水平45和90Kgha-1修正。ZnONPs特别是在叶面施用形式与P剂量90Kgha-1显着(p<0.05)改善玉米作物生长,与对照相比,产量和养分吸收。与对照组相比,在这些条件下生长的植物吸收更高水平的锌(Zn)和磷(P)。根中的锌吸收上升到16.34gha-1,137.88gha-1和166.89gha-1,谷物,还有Stover,分别。P摄取增加至0.80mgkg-1、10.066mgkg-1和12.17mgkg-1,顺序相同。此外,种子出苗率,植物高度,穗轴长度增加了2%,1177cm2,比对照组高3.3cm,分别。此外,在ZnONPs叶面施用中,Zn的利用效率提高到38.55%。
结论:以90Kgha-1P剂量的叶面施用形式的ZnONPs0.5Kgha-1比ZnONPs种子包衣更明显地增加了所研究的参数。本文受版权保护。保留所有权利。
BACKGROUND: Low recovery of conventional fertilizers remains a significant bottleneck for maize production globally. In particular, with phosphate fertilization, zinc (Zn) is prone to precipitation in soil, reducing recovery of both phosphorus (P) and Zn by maize.
RESULTS: The present study was designed to investigate the synergistic effect of zinc oxide (ZnO) nanoparticles (NPs) and P on maize crop growth, yield, and nutrient uptake under ZnO seed coating and foliar application in a randomized complete block design. However, plants were subjected to two ZnO NPs levels (0.5 and 12 kg ha-1) amended with two P levels (45 and 90 kg ha-1). ZnO NPs, especially in the form of foliar application, with a P dose of 90 Kg ha-1 significantly (P < 0.05) improved maize crop growth, yield, and nutrient uptake compared with control. In comparison with the control group, plants grown in these conditions absorbed higher levels of Zn and P. Zn uptake rose to 16.34 g ha-1, 137.88 g ha-1, and 166.89 g ha-1 in roots, grains, and stover respectively, and P uptake increased to 0.80 mg kg-1, 10.066 mg kg-1, and 12.17 mg kg-1 respectively. Additionally, seed emergence rate, plant height, and cob length increased by up to 2%, 1177 cm2, and 3.3 cm respectively compared with control. Furthermore, Zn use efficiency was increased up to 38.55% in ZnO NPs foliar application.
CONCLUSIONS: Application of ZnO NPs at 0.5 kg ha-1 in the form of foliar application with 90 kg ha-1 P dose produced a more pronounced increment in the parameters studied than ZnO NPs seed coating did. © 2024 Society of Chemical Industry.