以生产可能性曲线与收入预算线为工具，分析农户达到生产者均衡状态的必要条件。
With the tools of production possibility curve and budget line, the paper analyzes the necessary factors of the producer equilibrium state realized by rural household.
通过工程预算得到不同工艺不同规模的处理方案的总费用，通过曲线拟和得到不同工艺的费用和规模的函数关系式。
This essay shows the whole expense of the different treatment schemes through the project budge, and USES curves to obtain the mathematical models of different technical charges and scales.
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