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| Effect of different fertilization management on nitrogen loss in black soils in Northeast China |
| Received:March 28, 2016 |
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| KeyWord:black soils;straw returning;controlled release fertilizer;nitrogen loss |
| Author Name | Affiliation | E-mail | | YAN Li | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | | | WANG Yin | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | | | FENG Guo-zhong | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | | | DU Xiao-qing | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | | | LIU Shuo-ran | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | | | CAO Meng-ying | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | | | GAO Qiang | Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases, College of Resource & Environmental Science in Jilin Agricultural University, Changchun 130118, China | gaoqinglunwen@163.com |
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| Abstract: |
| In this research, the effect of different fertilization(urea, straw returning and controlled release fertilizer) in a one-time application on ammonia volatilization, nitrogen loss by runoff and leaching, and nitrogen residue on black soils was studied by soil box simulation method in order to know the nitrogen loss effect on environment and nitrogen use efficiency of different fertilization management. The results showed that ammonia volatilization accumulation amount of farmer conventional fertilization, straw returning fertilizer and controlled release fertilizer were 26.1 kg N·hm-2, 24.2 kg N·hm-2 and 23.9 kg N·hm-2, the fertilizer loss rate was 10.9%, 10.1% and 10.0%, respectively; nitrogen loss by runoff and leaching was accounted for 1.4%,1.5% and 0.9% of nitrogen application rate, in which the nitrogen loss by runoff was the main form. Inorganic nitrogen residue in 0~50 cm soil layer of farmer conventional fertilization, straw returning fertilizer and controlled release fertilizer were 42.2 kg N·hm-2, 42.3 kg N·hm-2 and 54.6 kg N·hm-2, respectively. Straw returning could reduce the nitrogen residue on soils, as well as maintaining yield and increasing nitrogen utilization efficiency; controlled release fertilization should decrease the nitrogen rate in less rainfall year due to higher risk of nitrate accumulation in soils. |
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