Optimization of the Nitrogen Fertilizer Management for a Winter Wheat-Summer Maize Rotation System in the North China Plain-from Field to Regional Scale
Excessive nitrogen fertilization is a common problem in a winter wheat-summer maize rotation system in the North China Plain, which cause not only the decrease of nitrogen use efficiency but also the increasing of the risk of environmental pollution. Therefore, optimizing N fertilization in field scale and as well as in regional scale is urgent. A two years survey with 561 farmers, 13 field experiments with 6-10 N levels and four replicates, and 57 field experiments with three treatments without replicates ...
| 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
