We adopt Monte Carlo simulation method, which makes the statistics amount of gross profit, cost and opportunity loss as fitness function.

应用蒙特卡罗方法，将利润、成本和机会损失的统计量作为适应值函数。

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The effect of application show that this method is good, and will become an efficiency assistant for forecasting the change tendency of the profit and loss of agricultural moisture.

实例计算结果表明：该方法性能良好，可望成为农业水分盈亏变化趋势预测的有效辅助手段。

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So we can use contribution margin method to evaluate the profit or loss and make it the basis of decision making.

该机会成本应当作为亏损产品的变动成本，进而应用贡献边际的方法评价其盈亏，方可作为决策依据。

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