| At present, China's water resources are also facing many problems. In the current water shortage situation, forcing people to re-adjust the goal of agricultural production, both to ensure a certain degree of crop yields, but also to maximize crop water and fertilizer use efficiency, water-saving irrigation and crop so to achieve the unity of high-yield agriculture sustainable development a major issue.This paper analyzes the water-saving irrigation and water-saving agricultural technology characteristics and evaluation of the effectiveness of the process, according to Song Mu Irrigation system characteristics, use the improved analytic hierarchy process as a benefit evaluation method, the transformation of loose water-efficient irrigation Mu effectiveness of a comprehensive evaluation .(1) the establishment of a transformation of loose water-saving agriculture irrigation Mu benefit evaluation index system, which consists of economic indicators, social indicators, indicators of new technology to promote efficiency, environmental benefits of saving water and energy efficiency indicators and targets composed of five categories of indicators, indicator layer that comply with requirements of agricultural modernization, improvement of the promotion of national water-saving irrigation, disaster prevention and mitigation benefits, the degree of improvement of agricultural water management system, improved living standards of farmers, water-saving irrigation area ratio of the total irrigated area, the use of water-saving irrigation economic internal rate of return, benefit cost ratio, canal water utilization coefficient, coefficient of field water use, irrigation water use coefficient, the improvement of waterlogging saline groundwater to improve the level of the rural ecosystem to improve the level of application of new technologies and development promote the level of the degree of development of information technology, including irrigation of 17 indicators. (2) In order to better reflect the transformation of water-efficient irrigation Mu loose the benefits of the project, using the status quo level (water-saving transformation of the former), the level of planning years (after the water-saving transformation) of indicators to compare the cost-effectiveness evaluation. According to the indicators on the nature of the system (positive or negative), the extent of (local or regional), the impact strength (mild or intensity), duration of effect (short or long term) and the system of indicators for global impact. The quantitative indicators at the highest level-I level (0.8 to 1.0), a high level -Ⅱlevel (0.6 to 0.8), middle level -Ⅲlevel (0.4 to 0.6), - low-gradeⅣ(0.2 ~ 0.4) and the lowest level-V level (0 to 0.2) is divided into five. The qualitative indicators into significant, more significant, in general, poor, poor five standards.This combination of comprehensive evaluation index system of all levels and the actual value and weight to calculate the 2005, 2010 and 2015 Song Mu-efficient irrigation agriculture comprehensive evaluation of the results.Song Mu irrigation area agriculture comprehensive benefit evaluation value from 0.288 in 2005 to 0.381 in 2010, is expected to reach 0.527 by 2015, compared to 2005 levels were increased by 32.29% and 82.99%. Song Mu-2005 status of irrigation water-saving agriculture in the overall efficiency of evaluation rating of poor efficiency, to improve efficiency by 2010 a level of efficiency in general, is expected to increase a level of 2015, longer to reach a good level of efficiency.Social benefits by 2005 of which 0.405, to 0.569 in 2010 to reach 0.732 by 2015, compared to 2005 increased by 40.49% and 80.74%. Economic benefits from 2005 to 2010 0.209 0.489 2015 will reach 0.584, compared to 2005 increased by 133.97% and 179.43%, the rapid economic growth. Saving water and energy efficiency of 0.069, the transformation through the water, to have increased to 0.075 in 2010, is expected to increase to 0.210 in 2015, compared to 2005 increased by 8.7% and 204.35%. Environmental benefits in 2005 to 0.222 to 0.291 in 2010, is expected to reach 0.435 by 2015, compared to 2005 increased by 31.08% and 95.95%, said Mu-Ming Song transformed through irrigation run, the growth of its environmental benefits speed will be faster. New technologies to promote efficiency of 0.440 in 2005 to 0.509 in 2010, is expected to decrease to 0.568 in 2015, compared to 2005 increased by 15.68% and 29.09%. Song Mu-efficient irrigation reconstruction project in the implementation process the application a number of new technologies, new processes, in line with the requirements of the advanced nature of the project.From the five major benefits of the overall efficiency of the contribution rate, the social weight of 0.27, cost-effective weight of 0.17, saving water and energy efficiency weight of 0.12, environmental benefits of the weight of 0.34, the new technology to promote effective weight 0.10, of which the environmental benefits of the greatest contribution. Looking at the results from the evaluation of the three major benefits to the maximum economic efficiency, saving water and energy efficiency level of increase will be most rapid.(3) Song Mu irrigation water-saving agriculture through the implementation of reconstruction projects, irrigation within the social, economic, ecological environment and saving water and energy efficiency of new technology in varying degrees to improve the ecological environment and agricultural industry has greatly changed the structure people's living standard has improved, water-saving irrigation in agricultural systems is the sustained, stable and coordinated direction. |
PDF Full Text Request