On the basis of long-term extensive studies and the field practice,the integrated control concepts of source and process controls of agricultural NPSP in the TGRA were proposed. The system for controllingNPSP in the TGRA was comprehensively evaluated to utilize rainfallresources, conserve soil and water, and recycle agricultural waste forreducing agricultural NPSP and increasing farmers' income. This newsystem can also provide a scientific basis for the control of NPSP andcontribute to the coordinated eco-economic construction, which consequently forms a virtuous cycle of economic development and environmental protection in the TGRA.Agricultural NPSP is caused by various sources, which are influenced by different natural, social, and economic factors (Wang, 2006).Therefore, studying and developing the specific technical measuresaforementioned in TGRA are still insufficient. In order to ensure maximum performance of the control system, comprehensive administrative measures and appropriate policies and regulations should beestablished, and vocational education and financial support from localgovernments should be provided. However, there are not many such policies andregulations in the TGRA. Therefore, additional efforts should be exertedin the future
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