关键词: 黄土高原旱地, 覆盖方式, 光合特性, 土壤水分, 糜子产量, 水分利用效率

Abstract: Best management practices (BMPs) are of significance in controlling agricultural non-point source pollution. This paper reviewed the research progress of BMPs in China from the aspects of 1) the classification of BMPs types (source control, migration pathways interception, and terminal treatment) based on the position of key pollutants source, and 2) the assemblage of BMPs at spatial unit scales (watershed and administrative area) based on the environmental background of implementing BMPs. It was pointed out that the existing BMPs researches were mainly insufficient in theory, cost-benefit analysis, measurements optimal assemblage, and environmental effect evaluation. Accordingly, the issues that should be put into priority in the future would be the theory system construction, model simulation, measures research and development and technologies integration, spatialscale transformation, and benefit evaluation. This paper could benefit the improvement of BMPs construction level and research quality in China, and also, provide theoretical reference and scientific evidence for the prevention and control of agricultural non-point source pollution and the improvement of water quality in China.

Key words: dryland of Loess Plateau, mulching pattern, photosynthetic characteristics, soil water, yield of broomcorn millet, water use efficiency (WUE).