Utilization of BNF Technology Supplementing Urea N for Sustainable Rice Production
Utilization of BNF Technology Supplementing Urea N for Sustainable Rice Production
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DOI：
10.1080/01904167.2014.888746
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发表时间：
2014-02
影响因子：
2.1
通讯作者：
A. T. M. A. Choudhury-A.-T.-M.-A.-Choudhury-68975844;M. Kecskés;I. Kennedy
中科院分区：
文献类型：
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作者：
A. T. M. A. Choudhury-A.-T.-M.-A.-Choudhury-68975844;M. Kecskés;I. Kennedy
水稻作物获得最大产量的临界氮（N）需求是众所周知的。过去50年来，单位面积产量增加了近三倍，为了克服水稻土壤中的严重缺氮，这种元素通常作为化肥“尿素”提供给水稻作物。不幸的是，大量的尿素-N通过不同的机制损失，导致环境污染问题。原则上，利用生物固氮技术可以补充尿素氮的使用，通过提高氮肥利用率，在相当程度上减少环境问题。不同的生物固氮（BNF）系统具有不同的潜力，以提供氮补充。因此，有必要设计适当的策略，以获得更可持续的氮素供应的水稻作物。本文回顾了评价不同生物固氮系统为水稻作物提供氮的潜力的研究，评估了当前的信息。
The critical nitrogen (N) requirement of rice crops for maximum yields is well known. To overcome acute N deficiency in rice soils as a result of an increasing yield per unit area in the past 50 years of almost three-fold, this element has been usually supplied to the rice crop as the chemical fertilizer ‘urea’. Unfortunately a substantial amount of the urea-N is lost through different mechanisms, causing environmental pollution problems. In principle, utilization of biological nitrogen fixation technology can supplement the use of urea-N, reducing the environmental problems to a considerable extent by improving nitrogen use efficiency. Different biological nitrogen fixation (BNF) systems have different potentials to provide an N supplement. It is necessary to design appropriate strategies to obtain more sustainable N supply to the rice crop. This paper reviews research to evaluate the potential of different BNF systems to supply N for the rice crop, assessing the current information.