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| Effects of Soil Zn Application on Grain Yield and Zn Utilization of Wheat in Zn-deficient Dryland Soils |
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| KeyWord:dryland; winter wheat; zinc fertilizer; grain yield; zinc concentration; zinc utilization efficiency |
| Author Name | Affiliation | | LI Meng-hua | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | WANG Zhao-hui | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | LI Qiang | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | DAI Jian | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | GAO Ya-jie | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | JIN Jing-jing | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | CAO Han-bing | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | WANG Sen | State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China |
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| Abstract: |
| Soil Zn deficiency is one of the factors seriously limiting the Zn contents of winter wheat grain in dryland area of Northwestern China. In a two-year field experiment with six Zn application rates of 0, 10, 25, 50, 100, 150 kg ZnSO4·7H2O·hm-2, effects of Zn applied to soil on winter wheat grain yield, grain Zn concentrations and soil DTPA-Zn were investigated. Soil DTPA-Zn increased significantly with Zn application rates. Soil application of Zn did not show effects on wheat grain yields, but increased grain Zn concentration by 32% and 44% in the first and second season, respectively, with maximum grain Zn concentrations of 19.8 mg·kg-1 and 32.1 mg·kg-1, lower than the recommended Zn level of 40~60 mg·kg-1. Total Zn utilization efficiency by wheat was less than 1%. These findings suggest that applying Zn directly to soil is not an option to improve Zn nutrition of wheat in the dryland area of northwestern China. |
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