辽河平原玉米田不同施肥下的土壤氨挥发特征
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The Characteristics of Soil Ammonia Volatilization Under Different Fertilizer Application Measures in Corn Field of Liaohe Plain
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图4. 不同施肥措施下的土壤铵态氮含量变化特征 |
Fig. 4. Variation characteristics of ammonium nitrogen content in soil under different fertilization measures |
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