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稻田水肥管理研究进展及思考

Research progress and thinking on water and fertilizer management in rice field

  • 摘要: 从稻田环境和温室气体排放、水稻生理生长及产量3个方面总结了稻田水肥管理的研究现状:合理的水肥管理技术能够促进水稻根系结构发展和养分吸收,促进水稻生理生长,提高水稻产量,同时还可减少稻田氮素流失和温室气体排放.通过对水稻节水灌溉与优化施肥的水肥管理模式的归纳总结,旨在提高稻田水肥利用率,对建立高产、节水、减排的高效水稻种植模式具有重要意义.结合前人研究结果,提出了现阶段稻田水肥管理模式下存在的问题:较少考虑环境因子的影响;水肥耦合试验处理少,结果差异大;高产和减排之间存在矛盾.同时强调将最新最前沿的农业科技成果(例如污水再生灌溉技术、水肥一体化技术)运用到农业生产实践中的重要性,对中国农业高效、绿色发展有指导意义.

     

    Abstract: Three aspects of environment and greenhouse gas emissions in paddy field, physiological growth index, yield of rice were summarized on the research status of water and fertilizer management. Reasonable water and fertilizer management techniques could promote the development of rice root structure and nutrient uptake, the physiological growth of rice, and increase rice yield. Meanwhile, nitrogen loss and greenhouse gas emission were reduced. According to summarizing the management mode of water-saving irrigation and optimized fertilization, the aim was to improve the utilization ratio of water and fertilizer in paddy fields, and establish planting mode with high yield, water saving and emission reduction of rice. Based on the previous studies, the problems existing in the water and fertili-zer management mode of paddy field at present stage are mainly as follows, less consideration is given to the influence of environmental factors in the water and fertilizer management research. There is less water and fertilizer coupling treatment in paddy field, which leads to significant differences in results and incomplete laws, and there is a contradiction between the water and fertilizer interaction on increasing yield and reducing pollutant emissions. At the same time, the importance of applying the latest and most advanced agricultural scientific and technological achievements(for example, sewage rege-neration irrigation technology, integrated water and fertilizer technology) is emphasized to agricultural production practice, which is conducive to the efficient and green development of agriculture in China.

     

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