Abstract: Through the large-scale self-pressured drip irrigation technology in Zhonggegen basin in Qitai county,Xinjiang,conventional crop inputs and outputs under the three kinds of high efficiency and water-saving technologies of pond dam pressurized drip irrigation and automatic drip irrigation were investigated and the optimal analysis of benefit index system was carried out.The results showed that from the analysis of efficient water-saving technology,the comprehensive score of big-head self-pressured drip irrigation had the highest comprehensive score and the best comprehensive evaluation.While from the perspective of the comparison of crop planting types,hybrid maize had the highest comprehensive score.According to the comparison of technological preferences and the crop planting structure analysis,the use of the big head self-pressure drip irrigation and water-saving technology in the Zhonggegen basin to grow hybrid corn can increase the economic benefits of agricultural products and improve the farmers' production and income.

Key words: water-saving technology, comprehensive evaluation, planting species, technology optimization