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15N Isotope Techniques for Estimating Effects of Urea-N Fertilizer Application Rate on Yieids and Nutrient Contents of Pakchoi Cabbage and Asparagus Lettuce and Nitrogen Utilization Efficiency |
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| Authors: | LIAO Yu-Iin ZHENG Sheng-xian RONG Xiang-min LIU Qiang FAN Mei-rong LIAO Yu-Iin ZHENG Sheng-xian RONG Xiang-min LIU Qiang FAN Mei-rong |
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