| Optimal Water-Fertilizer Combinations for Efficient Nitrogen Fixation by Sugarcane at Different Stages of Growth | |
Ma, Zhanxia1; Wu, Weixiong2,3; Alatalo, Juha M.; Fu, Wuxiang1,5; Bai, Yang1,6
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| 2021 | |
| Source Publication | WATER
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| ISSN | 2073-4441 |
| Volume | 13Issue:20Pages:- |
| Abstract | 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. |
| Keyword | sugarcane water-fertilization coupling drip irrigation spray irrigation delta N-15 content isotope technique |
| Subject Area | Environmental Sciences & Ecology ; Water Resources |
| DOI | 10.3390/w13202895 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000716404900001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/12385 |
| Collection | 2012年后新成立研究组 景观生态研究组 |
| Affiliation | 1.West Yunnan Univ Appl Sci, Coll Tea Puer, Puer 665000, Peoples R China 2.Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Xishuangbanna 666303, Peoples R China 3.Hebei Univ Engn, Sch Water Conservancy & Hydropower, Handan 056038, Peoples R China 4.Guangxi Key Lab Water Engn Mat & Struct, Nanning 530023, Peoples R China 5.Alatalo, Juha M.] Qatar Univ, Environm Sci Ctr, Doha 2713, Qatar 6.Yunnan Agr Univ, Coll Agron & Biotechnol, Kunming 650201, Yunnan, Peoples R China 7.Chinese Acad Sci, Ctr Conservat Biol, Core Bot Gardens, Mengla 666303, Peoples R China |
| Recommended Citation 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):-. |
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