【摘要】 通过对氮肥的增产作用以及不合理施肥所产生的负面影响的分析,阐明了作物氮素高效利用研究的意义;综述了作物氮素高效利用的生理机制和遗传研究进展;提出了作物氮素高效利用研究的技术途径,认为选育氮素高效利用品种是提高氮肥利用率最经济有效的途径和现代农业发展的必然要求。更多还原

【Abstract】 The research importance of high nitrogen use efficiency had been expounded by analyzing the yield increase function of nitrogen and the negative effects due to nitrogen fertilizing irrationally,also the physiological mechanism of crop high nitrogen use efficiency as well as the genetic research progress had been summarized.The technical approach of researching high nitrogen use efficiency had been put forward in this paper and thought that breeding varieties with high nitrogen use efficiency was the most economic approach and the need of modern agriculture development.更多还原