摘要
玉米氮肥过量使用会造成农民经济损失、地下水污染等问题,选择氮高效玉米品种是解决这些问题的有效措施。在较高施氮量下,氮高效品种可以在保证产量的同时,高效吸收利用土壤中的氮素;在减少氮肥投入条件下,氮高效品种可以充分利用玉米生长季中的矿化氮,达到相同的高产水平。本文综述了国内外氮高效评价指标及其生理机制的研究进展,为玉米氮高效生理机制的进一步研究提供依据。
Excessive nitrogenous fertilizer using in maize can bring the problem and pollution of ground water. It is an effective measure to choose nitrogen-efficient conditions of high nitrogenous fertilizer input, nitrogen-efficient maize hybrids can efficiently with ensuring high yield. It can also of farmers＇ economic loss maize hybrids. Under the absorb and use nitrogen thoroughly use mineralized nitrogen in growing season of maize to achieve the same yield. This paper reviewed the progress of nitrogen-efficient evaluation index and physio logical mechanism in maize, and provided some references for further study on nitrogen-efficient standard and its physiological mechanism.
出处
《东北农业大学学报》
CAS
CSCD
2008年第9期125-129,共5页
Journal of Northeast Agricultural University
关键词
玉米
氮高效
评价指标
生理机制
maize
nitrogen-efficient
evaluation index
physiological mechanism
