| Effects of ZnO NPs application on grain zinc content and zinc utilization of wheat |
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| DOI：10.7606/j.issn.1000-7601.2018.04.02 |
| Key Words: ZnO NPs spraying application soil application wheat grain Zinc content Zinc fertilizer utilization efficiency |
| Author Name | Affiliation | | ZHANG Teng | Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture,Yangling, Shaanxi 712100, China
College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China | | CUI Li-li | College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China | | LIU Yan\ni | College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China | | MA Chen | College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China | | LI Shun-Li | College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China | | MAO Hui | Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture,Yangling, Shaanxi 712100, China
College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China | | WANG Zhao-hui | Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture,Yangling, Shaanxi 712100, China
College of Resources and Environmental Science, Northwest A&F University,Yangling, Shaanxi 712100, China |
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| Abstract: |
| The field plot experiment was conducted to study the effects of different zinc fertilizer applications on the yield, grain zinc content and zinc accumulation and zinc utilization rate of winter wheat. Seven treatments were set up:, no zinc(CK), soil application of ZnSO4, ZnSO4 spray, soil+spray ZnSO4, soil ZnO NPs, ZnO NPs spray and soil+spray ZnO NPs. The results showed that each application of zinc had no significant effect on grain yield, while the application of ZnO NPs significantly increased grain zinc content, and the individual application of soil increased the zinc content from the control's 18.9 mg·kg-1 to 24.6 mg·kg-1 with 30% increase range, ; the grain zinc content of the ZnSO4 spray increased to 28.4 mg·kg-1, increased by 50%; and the grain zinc content of the soil+spray ZnSO4 treatment increased to 30.2 mg·kg-1, increased by 60%; ZnO NPs spraying alone improved the grain zinc-enchanced index by nearly 3 times reaching 9.7 mg·kg-1, the grain iron content was increased by 2.5 times compared with ZnSO4 spray, reaching 58.9 mg·kg-1. At the same time, ZnO NPs spray treatment significantly increased the amount of zinc accumulation in the leaves, making the utilization rate of zinc in the above-ground parts reach 35%, which was nearly 4 times higher than that of ZnSO4 spray treatment, and reached a significant difference. It can be seen that the application of ZnO NPs compared with other treatments has higher efficiency and efficiency of zinc and iron in wheat grain, which may reduce the shedding of zinc in the leaves due to the small size effect of nanoparticles. |
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