| ：氮肥和有机肥配施对盐碱地酿酒高粱生长、氮素利用效率及土壤N2O排放的影响 |
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| 引用本文： | 杨旖璇,屈忠义,杨威,刘琦,任恩良,季文涛.：氮肥和有机肥配施对盐碱地酿酒高粱生长、氮素利用效率及土壤N2O排放的影响[J].干旱地区农业研究,2023(6):116-127. |
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| 作者姓名： | 杨旖璇 屈忠义 杨威 刘琦 任恩良 季文涛 |
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| 作者单位： | 内蒙古农业大学水利与土木建筑工程学院 |
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| 基金项目： | 国家重点研发计划项目(2021YFC3201205)；;国家自然科学基金项目(51779117,52109056)； |
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| 摘 要： | 采用田间小区试验，依照等氮替换原则，设不施氮肥处理，优化氮肥施用量180 kg·hm-2单施化肥、40%有机肥替代化肥、60%有机肥替代化肥，常规氮肥施用量240 kg·hm-2单施化肥、40%有机肥替代化肥、60%有机肥替代化肥共7个处理，探究河套灌区盐渍土氮肥与有机肥配施对酿酒高粱生长特性、氮素利用效率及土壤N2O排放的影响。结果表明：(1)相同施氮量下，60%有机肥替代化肥处理成熟期土壤全氮、碱解氮和有机质含量较单施化肥处理分别增加10.52%～12.77%、36.36%～50.64%、41.58%～51.33%。(2)相同施氮量下，40%有机肥替代化肥处理高粱产量均高于其他施肥处理，增产6.63%～15.72%。(3)施氮量180 kg·hm-2 40%有机替代处理较其他施肥处理氮肥利用率提高1.98%～22.84%,氮肥偏生产力提高3.49～17.19 kg·kg-1;施氮量240 kg·hm-2 40%有机替代处理较其他施肥处理氮肥农学利用率提...
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| 关 键 词： | 酿酒高粱 有机无机肥配施 氮素利用 N2O排放 |
Effects of combined application of nitrogen fertilizer and organic fertilizer on the growth, nitrogen use efficiency of brewing sorghum and soil N2O emission in saline\|alkali land |
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| YANG Yixuan,QU Zhongyi,YANG Wei,LIU Qi,REN Enliang,JI Wentao.Effects of combined application of nitrogen fertilizer and organic fertilizer on the growth, nitrogen use efficiency of brewing sorghum and soil N2O emission in saline\|alkali land[J].Agricultural Research in the Arid Areas,2023(6):116-127. |
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| Authors: | YANG Yixuan QU Zhongyi YANG Wei LIU Qi REN Enliang JI Wentao |
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| Institution: | Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China |
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| Abstract: | According to the principle of equal nitrogen replacement, a field plot experiment including 7 treatments of a non\|nitrogen fertilizer treatment, optimize the nitrogen fertilizer application rate of 180 kg·hm-2 single fertilizer, 40% organic fertilizer replacement fertilizer, 60% organic fertilizer replacement fertilizer, conventional nitrogen fertilizer application rate of 240 kg·hm-2 single fertilizer, 40% organic fertilizer replacement fertilizer, and 60% organic fertilizer replacement fertilizer was conducted to examine the effects of nitrogen fertilizer and organic fertilizer on the growth characteristics, nitrogen utilization efficiency and N2O emission of wine sorghum in saline soil of Hetao irrigation area. The results showed that: (1) under the same nitrogen application rate, the content of total nitrogen, alkali\|hydrolyzable nitrogen and organic matter in mature soil treated with 60% organic fertilizer instead of chemical fertilizer increased by 10.52%~12.77%, 36.36%~50.64% and 41.58%~51.33%, respectively, compared with that of treatment with chemical fertilizer alone. (2) Under the same nitrogen application rate, the sorghum yield of 40% organic fertilizer instead of chemical fertilizer treatment was higher than that of other fertilizer treatments, with an increase of 6.63%~15.72%. (3) Compared with other fertilization treatments, the nitrogen fertilizer utilization rate of 180 kg·hm-2 40% organic substitution treatment increased by 1.98%~22.84%, and the partial productivity of nitrogen fertilizer increased by 3.49~17.19 kg·kg-1. The agronomic utilization rate of nitrogen fertilizer in 40% organic substitution treatment with 240 kg·hm-2 nitrogen application rate was 0.48~6.11 kg·kg-1 higher than that in other fertilization treatments. (4) Under the same nitrogen application rate, the N2O emission of 60% organic substitution treatment was the smallest, which decreased by 41.50%~47.97% and 3.82%~11.52% respectively compared with the treatment of chemical fertilizer alone and 40% organic substitution treatment; 40% organic substitution treatment takes the second place. Based on the yield, growth status, nitrogen utilization rate and N2O emission of brewing sorghum, the replacement of 40% chemical fertilizer with organic fertilizer at 180 kg·hm-2 nitrogen fertilizer application rate was the more suitable nitrogen fertilizer application rate and organic ratio for brewing sorghum cultivation in the Hetao irrigation area. |
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| Keywords: | brewing sorghum combination of organic and inorganic fertilizers nitrogen utilization N2O emission |
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