XU Yingying,WANG Yuxian,YANG Huiying,et al.Effects of Nitrogen Application Rate on Soil Organic Nitrogen Components and Maize Yield Under Integration of Water and Fertilizer[J].HEILONGJIANG AGRICULTURAL SCIENCES,2024,(08):19-24.[doi:10.11942/j.issn1002-2767.2024.08.0019]
水肥一体化下施氮量对土壤有机氮组分及玉米产量的影响
- Title:
- Effects of Nitrogen Application Rate on Soil Organic Nitrogen Components and Maize Yield Under Integration of Water and Fertilizer
- 文章编号:
- 4
- Keywords:
- integration of water and fertilizer; nitrogen application rate; organic nitrogen components; maize yield
- 文献标志码:
- A
- 摘要:
- 为进一步优化玉米水肥一体化施肥技术,促进氮肥有效转化利用,研究不同施氮量对土壤有机氮组分及玉米产量的影响。结果表明,随施氮量的增加,土壤酸解总氮、酸解铵态氮、酸解氨基酸态氮和酸解氨基糖态氮含量呈先上升后下降趋势,当施氮量为210 kg·hm-2(N2处理)时,以上4种有机氮组分含量最高。酸解铵态氮是影响玉米产量的关键因素, N2处理下酸解铵态氮含量较N3(252 kg·hm-2)、N4(273 kg·hm-2)、N1(147 kg·hm-2)和N0(0 kg·hm-2)分别显著提高3.55%、9.86%、20.37%和170.21%;产量分别显著提高1.58%、2.97%、18.43%和112.89%。综上,N2处理(施氮肥210 kg·hm-2)具有更高的供氮潜力,是较为理想的施氮量。
- Abstract:
- In order to further optimize the fertilization technology under integration of water and fertilizer for maize, and to promote the effective transformation and utilization of nitrogen fertilizer, effects of different nitrogen application rate on soil organic nitrogen components and yield were studied. The results showed that with the increase of nitrogen application rate, the content of soil acid hydrolyzed total nitrogen, acid hydrolyzed ammonium nitrogen, acid hydrolyzed amino acid nitrogen, and acid hydrolyzed amino sugar nitrogen showed a trend of first increasing and then decreasing. When the nitrogen application rate was 210 kg·ha-1 (N2 treatment), content of the above four organic nitrogen components was the highest. Acid hydrolyzed ammonium nitrogen 3was the key factor affecting maize yield, and its content under N2 treatment was higher than that in N3 (252 kg·ha-1), N4 (273 kg·ha-1), N1 (147 kg·ha-1) and N0 (0 kg·ha-1) ,which significantly increased by 3.55%, 9.86%, 20.37%, and 170.21%, respectively. Yield significantly increased by 1.58%, 2.97%, 18.43%, and 112.89%, respectively. In summary, N2 treatment (nitrogen application rate is 210 kg·ha-1) has higher nitrogen supply potential, was a more ideal nitrogen application rate.
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备注/Memo
收稿日期:2024-04-28