科学的秸秆利用不仅能节约化肥施用量，提高土壤的生产力，保持农业用地的可持续发展，还能降低因不合理方式（如焚烧等）处理秸秆所造成的环境污染问题。随着生物科技的发展，作物秸秆将可能被大量移除用作生物燃料原料或生产其他工业制品，而导致严重的土壤退化。本项目拟研究不同秸秆移除率下的土壤理化性质、抗侵蚀性及生产力的变化。项目拟将作物秸秆按照0,25,50,75和100%的比例从田间移除，并在每年春秋两季分别测定土壤的理化性质，并将这些数据应用于SWEEP和RUSLE2模型，模拟土壤在不同风速、不同降雨下的侵蚀情况。根据实测土壤参数与模型模拟结果，评估作物秸秆移除对土壤可持续发展的影响。同时，当季作物将按照生产者意愿进行种植，作物产量将被用于评估土壤的生产力。最终，本项目希望能提出不同土壤、环境条件下的最大作物秸秆允许移除量，为作物秸秆的科学利用及农业土地的可持续发展提供数据支撑。

Comprehensive utilization of crop residue is one of the key components of agricultural production. Using crop residue properly not only can reduce fertilizer application, increase soil productivity, maintain the sustainability of farmland, but also can minimize the environmental risks from unreasonable residue application. Following the development of biotechnology, crop residue may be removed at a large scale for bioenergy production or other uses. Indiscriminate removal, however, may cause severe soil degradation. This research is aimed to study the impacts of crop residue removal at different levels on soil properties, erodibility, and productivity. Crop residue will be removed at 0, 25, 50, 75, and 100% from field and soil parameters will be measured twice a year in spring and fall, respectively. Measured parameters will be applied to SWEEP and RUSLE2 to study the soil erosion loss by wind and water under different wind velocities and precipitation intensities. Meanwhile, crop yield will be measured to assess the soil productivity under different residue removal levels. This project is going to establish the permissible crop residue removal levels under different soil properties and management strategies for agricultural sustainability.