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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Towards nitrogen autotrophic rice
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Towards nitrogen autotrophic rice

机译：迈向自养氮稻

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摘要

Nitrogen nutrition Most frequently limits the crop productivity. Chemical nitrogen fertilizers being ecologically and economically expensive, interest in exploitation of alternative or supplementary nitrogen sources has been renewed to encourage sustainable agriculture. Reducing the fertilizer nitrogen use while maintaining the native soil nitrogen resources and enhancing crop nitrogen output by biological nitrogen-fixation systems is desirable from both environmental and economic perspectives. Such a production system would enhance agricultural production in the long term in a way that is economically viable and ecologically sound, as well cis socially acceptable. Towards the sustainable rice production, rice cultivar with better nitrogen use efficiency is one of the options. In the case of nitrogen inputs into rice production systems, it may be the judicious use of nitrogen fertilizers and/or nitrogen derived from atmospheric nitrogen via biological nitrogen fixation. Developing rice with biological nitrogen fixation capacity, i.e. autotrophy for nitrogen, could help farmers overcome the nitrogen nutrition limitations and increase the productivity, reducing dependency on chemical nitrogen fertilizers. The various options and the pros and cons of such options are discussed herein, as a part of an approach to the prospect of achieving nitrogen autotrophic rice.
机译：氮营养最经常限制作物的生产力。化学氮肥在生态和经济上都很昂贵，人们对开发替代性氮源或补充氮源的兴趣已经重新激发，以鼓励可持续农业。从环境和经济的角度来看，在保持天然土壤氮资源的同时减少肥料氮的使用以及通过生物固氮系统提高作物氮的产量是理想的。这种生产系统将以经济上可行和生态上合理的方式从长远来看提高农业生产，同时也被社会所接受。为了实现水稻的可持续生产，氮素利用效率更高的水稻品种是一种选择。在向水稻生产系统输入氮的情况下，明智地使用氮肥和/或通过生物固氮从大气氮中获取的氮。开发具有生物固氮能力（即氮的自养能力）的水稻可以帮助农民克服氮素营养方面的局限性并提高生产率，从而减少对化学氮肥的依赖。在本文中讨论了各种选择以及这种选择的利弊，作为实现氮自养水稻的一种途径。

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