Optimal N management affects the fate of urea-¹⁵N and improves N uptake and utilization of wheat in different rotation systems.

ABSTRACT: Rice-wheat and maize-wheat rotations are major cropping systems in the middle and lower reaches of Yangtze River in China, where high nitrogen (N) inputs and low N efficiency often exacerbate resource waste and environmental pollution. Due to the changes in factors such as soil properties and moisture content, the N fate and the N utilization characteristics of wheat in different rotations are significantly different. Efficient N management strategies are thus urgently required for promoting maximum wheat yield in different rotation systems while reducing N loss. A 2-year field experiment using isotopic (¹⁵N) tracer technique was conducted to evaluate the fate of ¹⁵N-labeled urea in wheat fields and the distribution characteristics of N derived from different sources.

SUBMITTER: Ma Q 

PROVIDER: S-EPMC11308437 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature