Role of stubble management in improving soil fertility

留茬管理在提高土壤肥力中的作用。在澳大利亚西南部高度风化的养分贫乏的土壤中，残茬中的养分量对于养分循环以及确定最佳施肥量至关重要。因此，残茬管理是作物施肥和养分管理的一个组成部分。我们将在一系列的种植情况下研究土壤-作物连续体中的养分循环。将使用计算机建模来扩展结果在空间和时间上的适用性。该项目将提供改进肥料建议所需的知识，以考虑到过去10-20年来种植系统发生的变化。

Role of stubble management in improving soil fertility. In highly-weathered nutrient-poor soils of the south-western Australia, the amount of nutrients in stubble is critical in nutrient cycling as well as in determining optimal amounts of fertilisers to be applied. Stubble management is therefore an integral part of crop fertilisation and nutrient management. We will characterise nutrient cycling in the stubble-soil-crop continuum in a range of cropping situations. Computer modelling will be used to extend applicability of results over space and time. This project will provide the knowledge required for improving fertiliser recommendations to take into account changes in the cropping systems that have occurred in the last 10-20 years.