irrigation operation
1.In addition, it is necessary to invigorate the circulation between urban and rural areas, actively explore the rural market, and energetically develop and produce high-quality, inexpensive and practical farm machines for irrigation, farmland operation and the processing of farm and sideline products. 
3.The result is of importance significance for the reliability of water supply during irrigation periods and the control methods of reservoir operation based on the concept of pollutant sluicing before water supply.
4.The intake dam of the Chuan River irrigation area is the first overflow concrete lined palm bark dam in Yunnan Province. After 28-year operation the overflow surface of the dam is severely worn.
5.To counter the real situation that the management system is not smooth, management mechanism not alive, duty not clear, management extensive, fund not smooth, policy regulation not perfect and investment system not consummate in farmland irrigation, the suggestions and countermeasures to reform the management mechanism of utilizing water with high efficiency in farmland irrigation of our country at present are expounded, which must establish managemant system and operation mechanism fitting in with our country water condition.
6.Agricultural production and operation organizations and agricultural labourers shall put in fund and labour accumulation in input to agricultural production and capital construction such as irrigation and water conservancy works, and the State shall grant support thereto.
7.Based on the analyses of the investment of nozzle tube net and relationship between the annual operation cost and tube diameter function of a fixed spray irrigation system, a mathematic model to calculate the economical tube diameter of a spray irrigation system is developed by using the minimum expense norm and nonlinear planning theory in engineering economic analysis, and a direct calculation formula for the economical tube diameter in unrestrained conditions is presented.
8.The accelerated industrialization and commercialization of sci-tech research findings have changed Xinjiang’s traditional ways of agricultural production and operation, and notable achievements have been made in protective plant cultivation, irrigation technology and strain improvement. The technological transformation of industrial enterprises has enhanced both their economic efficiency and market competitiveness. Science and technology are playing an important role in the development of the regional economy and social progress.
