华中农业大学学者揭示平衡水稻产量和食味品质的氮肥管理策略_食品科技_食品资讯_食品伙伴罐�/title>

　　近日，华中农业大学农业生态团队结合me ta大数据分析和田间控制试验验证的方法，对氮肥施用量和施用时期对稻米产量和品质的影响进行了综合分析，指出适当减少氮肥施用总量和减少氮肥穗粒肥施用量，能明显改善稻米食味品质并且不会影响产量。同时该研究对不同施肥条件下水稻氮素吸收、分配与稻米蛋白含量的关系进行了分析，提出提高氮肥农学利用率（ANUE）是获得水稻丰产和优质平衡的关键，为农业生产转型条件下水稻丰产美食味栽培的氮肥优匕�a href='//www.sqrdapp.com/news/tag_4604.html' class='zdbq' title='管理相关食品资讯' target='_blank'>管理措施提供理论指导与技术支撑。该研究�?ldquo;Balance rice yield and eating quality by changing the traditio nal nitrogen management for sustainable production in China��为题发表于Journal of Cleaner Production杂志、�/div>

　　我校植物科学技术学�?020级硕士研究生程博为该论文第一作者，江洋副教授、曹凑贵教授为论文的共同通讯作者。该研究得到了国家重点研发计划和国家自然科学基金等项目的资助、�/div>

　　文献检索过程及数据库所包含实验点的地理位置

　　氮肥施用量、氮肥农学利用效率、氮肥偏生产效率与水稻产量、蛋白质含量、直链淀粉含量的效应值相关性分析结枛�/span>

　　【英文摘要【�/div>

　　Total yield of rice in China has been greatly improved in recent decades. However, this yield improvement is excessively dependent on the input of nitrogen （N� fertilizer. In recent years, since the demand for rice quantity has basically been met, co nsumers pay more attention to rice quality, especially the eating quality. Increasing N application improves the yield of rice, but it changes the protein and amylose co ntent in rice, generally reducing the eating quality. It is necessary to establish a more reaso nable N management to balance yield and eating quality for rice sustainable development in China. In this study, we assessed the effectiveness of various N managements on rice yield and eating quality by me ta-analysis. Under traditio nal N management, increasing the amount of total N and late-stage N applications weaken the yield increase and decrease the eating quality with the significant increase in protein and amylose co ntent in rice. By reducing total N and late-stage N application input, eating quality and N use efficiency could be significantly improved. Further, co nditional inference tree analysis indicated that adjusting the amount of late-stage N application was a major measure to improve traditio nal N fertilization, since it could increase agro nomic N use efficiency in rice production and balance yield maintenance and eating quality improvement. Our supplementary experiment results further co nfirmed that adjusting N management could improve the rice yield and eating quality with less N input. Thus, we propose the following adjusting N management strategies for rice sustainable production in China: �?� Decreasing the traditio nal high N rate is absolutely necessary, although it will slightly decrease rice yield, but significantly improve rice eating quality and N use efficiency; �?� Reducing the amount of late-stage N application appropriately could improve the rice eating quality; �?� Improving agro nomic N use efficiency is the key to balance rice yield and eating quality. Our results provide an im portant reference for the future N management in rice production for the purpose of achieving high yield and better eating quality.

　　论文链接：https://doi.org/10.1016/j.jclepro.2021.127793