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讨论了农田生态系统水资源价值核算的原则与方法，通过山西省屯留县秸秆覆盖技术的案例研究，证实了该方法在可持续农业技术研究中应用的有效性。
The principle and method of calculating the value of water resources in farmland ecosystem are discussed. The case study of straw covering technology in Tunliu County of Shanxi Province confirms the effectiveness of this method in the study of sustainable agriculture technology.