Research progress in irrigation mode selection of high-efficiency water-saving agriculture
ZHANG Liang1, ZHOU Wei1,2, LI Daoxi1*
1. College of Water Resources, North China University of Water Resources and Hydropower, Zhengzhou, Henan 450046, China;2. CPC Huangguoshu Scenic Area Management Committee Comprehensive Law Enforcement Brigade, Anshun, Guizhou 561022, China
Abstract With development of water-saving agriculture, high-efficiency water-saving irrigation has become a key way to solve the shortage of agricultural water resources. It is quite important that a high-efficiency water-saving irrigation mode is selected based on the need of regional sustainable development and local conditions. However, there is still a series of problems unsolved in selection of agricultural high-efficiency water-saving irrigation mode now. Based on the above background, the relevant study results were reviewed in terms of influencing factors analysis, comprehensive performance evaluation and risk analysis of mode selection of agricultural high-efficiency water-saving irrigation. It turned out that the influencing factors were selected more randomly with a strong bias and lack of a set of standardized and scientific index and selection criteria currently. Comprehensive performance evaluation was subject to numerous levels, dynamic variables and uncertain factors with considerable fluctuation. Especially, the social performance and ecology environmental performance were difficult to quantify. As a result, a unified and recognized performance evaluation index system and its corresponding practical evaluation model were in shortage. The selection of high-efficiency water-saving irrigation mode was limited by multi-risk factors. Additionally, classification and identification of these risk factors were relatively complicated, and the quantitative relationships between the factor selecting risk and irrigation performance were difficult to determine. Furthermore, the development trend in investigation of high-efficiency water-saving irrigation modes was prospected.
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