After these, this paper analyses the features of irrigation benefits, and calculates the average benefit of every scheme with simulated method, using Economic Net Present Value.
之后，对灌溉效益特点进行深入地分析，并使用模拟方法，以经济净现值为指标对研究区的农业灌溉方案的经济效益进行模拟求解。
This method can also carry on the comparison of the net benefit among different schemes, in order to confirm the cost of different schemes and benefit relation.
这个方法还可以在不同的方案之间进行净收益的比较，以确定不同方案的本钱和收益关系。
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