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典型红壤不同形态氮素迁移对长期施肥制度的响应
申凤敏1,姜桂英1(),张玉军1,2,刘芳1,刘世亮1(),柳开楼3
Response of Different Forms of Nitrogen Migration in Typical Red Soil to Long-Term Different Fertilization Systems
SHEN FengMin1,JIANG GuiYing1(),ZHANG YuJun1,2,LIU Fang1,LIU ShiLiang1(),LIU KaiLou3

图7. 不同处理不同土层各形态氮素占全氮比例

Fig. 7. The proportion of different nitrogen form to total nitrogen in different soil layers under different treatments