Optimal Water-Fertilizer Combinations for Efficient Nitrogen Fixation by Sugarcane at Different Stages of Growth
文献类型：期刊论文
| 作者 | Ma, Zhanxia7; Wu, Weixiong5,6; Alatalo, Juha M.; Fu, Wuxiang3,7; Bai, Yang2,7 |
| 刊名 | WATER
 |
| 出版日期 | 2021 |
| 卷号 | 13期号:20页码:- |
| ISSN号 | 2073-4441 |
| 关键词 | sugarcane water-fertilization coupling drip irrigation spray irrigation delta N-15 content isotope technique |
| DOI | 10.3390/w13202895 |
| 英文摘要 | High fertilizer application and over-irrigation in sugarcane systems can cause considerable N2O emissions. Optimized water-fertilization management which reduces N2O emissions, while maintaining sugarcane biomass, is crucial, but may affect nitrogen fixation by sugarcane. This study evaluated the combined effect of water-fertilization on sugarcane biomass and nitrogen fixation in field trials in southern China. Treatments included drip and spray irrigation, with three levels (0% (low), 50% (medium), 100% (high)) of irrigation and of fertilizer. A rain-fed crop (no irrigation or fertilizer) was included as the control. The results showed that (1) spray irrigation with medium water and high fertilization increased biomass. The optimum combination in sugarcane elongation stage was drip irrigation with medium water and high fertilization, while drip irrigation with high water and high fertilization was the best choice for maturity stage. (2) For sugarcane nitrogen (delta N-15) content, spray irrigation with medium water and high fertilization was the best combination in seedling and tillering stages. The optimum combination in the elongation stage was drip irrigation with medium water and high fertilization, and in maturity stage was drip irrigation with high water and high fertilization. (3) For soil (delta N-15 content), drip irrigation with high water and high fertilization proved optimal for seedling, tillering, and maturity stages. (4) In seedling stage, sugarcane (delta N-15 content) was found to be strongly correlated with leaf area index, soil water, soil temperature, and soil electrical conductivity. Soil (delta N-15 content) was correlated with photosynthesis and soil temperature. In conclusion, drip irrigation appears most suitable for field planting, while the best treatment in seedling and tillering stages is medium water-high fertilization, and that the best in elongation stage is high water-medium fertilization. The optimum water-fertilizer combinations identified here can provide a scientific basis for optimization and management of irrigation and fertilization in China and other regions with similar environments. |
| 学科主题 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000716404900001 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/12385]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Conservat Biol, Core Bot Gardens, Mengla 666303, Peoples R China 2.Yunnan Agr Univ, Coll Agron & Biotechnol, Kunming 650201, Yunnan, Peoples R China 3.Alatalo, Juha M.] Qatar Univ, Environm Sci Ctr, Doha 2713, Qatar 4.Guangxi Key Lab Water Engn Mat & Struct, Nanning 530023, Peoples R China 5.Hebei Univ Engn, Sch Water Conservancy & Hydropower, Handan 056038, Peoples R China 6.Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Xishuangbanna 666303, Peoples R China 7.West Yunnan Univ Appl Sci, Coll Tea Puer, Puer 665000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Zhanxia,Wu, Weixiong,Alatalo, Juha M.,et al. Optimal Water-Fertilizer Combinations for Efficient Nitrogen Fixation by Sugarcane at Different Stages of Growth[J]. WATER,2021,13(20):-. |
| APA | Ma, Zhanxia,Wu, Weixiong,Alatalo, Juha M.,Fu, Wuxiang,&Bai, Yang.(2021).Optimal Water-Fertilizer Combinations for Efficient Nitrogen Fixation by Sugarcane at Different Stages of Growth.WATER,13(20),-. |
| MLA | Ma, Zhanxia,et al."Optimal Water-Fertilizer Combinations for Efficient Nitrogen Fixation by Sugarcane at Different Stages of Growth".WATER 13.20(2021):-. |
入库方式： OAI收割
来源：西双版纳热带植物园
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