| 摘要 |
The delayed nitrogen application technology is a crucial method for achieving high yield and efficiency in wheat cultivation. Specifically, more nitrogen is supplied to the middle and late growth stages of wheat by adjusting the application time and proportion of nitrogen fertilizer. This approach helps improve the tiller-bearing percentage, increase the number of grains per ear and the thousand-grain weight, while also reducing nitrogen loss and enhancing fertilizer use efficiency. This paper systematically elaborated on the high-yield and high-efficiency cultivation technology system with delayed nitrogen application for wheat, covering variety selection, soil management, sowing technology, the principle and implementation methods of delayed nitrogen application, integrated water and fertilizer management, field management, and comprehensive pest and disease control. Considering the ecological characteristics of major wheat-growing regions in China, tailored technical solutions were proposed, and operational key points of critical technological steps were introduced in detail. Through scientific variety distribution, precise nitrogen management, and integrated pest control, wheat yield and quality can be enhanced while achieving cost saving, improved efficiency, and ecological environmental protection. This paper provides systematic theoretical guidance and practical references for promoting thedelayed nitrogen application technology in wheat, thereby supporting the sustainable development of China's wheat industry. |
