基于非充分灌溉水氮互作对冬小麦产量品质调控机理

The conditions of water and fertilizer will directly affect yield and grain.quality of winter wheat, a study of the regulation mechanism of irrigation and.nitrogen application on yield and quality of winter wheat has very important.significance for improve water and fertilizer use efficiency. In this research,.will adoping the combination methods with pot experiments, field minispot.experiments and analysis indoor, there are the main research contents:(1) the.effects of irrigation and nitrogen application during jointing and maturity on.grain quality traits and plant physiological indexes of winter wheat; (2) the.effects of irrigation and nitrogen application during jointing and maturity on the.enzymatic activity related to nitrogen metabolism of winter wheat; (3) the effects.of irrigation and nitrogen application during jointing and maturity on grain.quality formation of winter wheat based on comprehensive consideration of the.process on wheat absorption transformation and use to water and nitrogen, the.influence mechanism of irrigation and nitrogen regulation on grain quality of.winter wheat will reveal from physiological angle. Anticipated results has very.important theory and realistic meaning to determine the quantitative relationship.of yield and quality with irrigate and nitrogen, high efficient utilization of.water and fertilizer.

麦田水、肥条件直接影响小麦产量及籽粒品质性状，研究水、氮运筹对冬小麦籽粒品质性.状的调控机理，对于促进麦田水、氮科学管理以及农业水土资源高效利用具有十分重要的意义.。本项目拟采用盆栽和小区控制试验与室内实验分析相结合的方法，重点研究：（1）拔节至.成熟期水、氮运筹对冬小麦植株生理指标以及籽粒品质性状的影响；（2）拔节至成熟期水、.氮运筹对植株氮代谢相关酶活性的影响；（3）综合考虑植株对水、氮吸收、转化、利用过程.，研究拔节至成熟期水、氮运筹对冬小麦籽粒品质形成过程的影响，从生理生化学角度揭示水.、氮调控对冬小麦籽粒品质的影响机理。预期研究成果对于明确产量-品质指标-水、氮供应之.间的定量关系，完善和充实冬小麦水氮高效利用体系以及进一步优化冬小麦水、氮运筹模式具.有十分重要的理论与现实意义。

为了合理解决河南省冬小麦生产过程出现的水资源短缺和氮肥过量使用问题，在大田、测坑和筒栽区开展了3年连续的水氮试验和水分胁迫试验，重点研究：（1）拔节至成熟期水、氮运筹对冬小麦植株生理指标以及籽粒品质性状的影响；（2）拔节至成熟期水、氮运筹对植株氮代谢相关酶活性的影响；（3）综合考虑植株对水、氮吸收、转化、利用过程，研究拔节至成熟期水、氮运筹对冬小麦籽粒品质形成过程的影响，从生理生化学角度揭示水、氮调控对冬小麦籽粒品质的影响机理。通过试验所得数据撰写论文6篇，其中SCI收录2篇，提出冬小麦节水高效灌溉模式1套，另外在投论文3篇，以上成果对于明确产量-品质指标-水、氮供应之间的定量关系，完善和充实冬小麦水氮高效利用体系以及进一步优化冬小麦水、氮运筹模式具有十分重要的理论与现实意义。