施肥方案模型

Fertilizing Model

根据给定的施肥量与产量关系的实验数据，通过必要的假设和合理性分析之后，用二次函数去拟合氮肥的作用模型，而用威布尔生长模型去拟合磷、钾肥作用模型。同时，引入修正量△Ｙ对模型进行修正。并从实用价值角度对模型进行讨论中得到了最大产量的范围。还讨论了施肥为０时产量值不为０的原因，最后讨论了模型的优缺点。

Given the output data of two kinds of vegetables,we developed our method andfind the relations between the used fertilizer and the output accordingly. After necessary assumptionsand reasonable analysis , we carefullY studied the distribution of the data.Then we decided tochoosequadratic function to simulate the effects of nitrogen fertilizer,while we use Weibull Medel to simu-late the effects of phosphate fertilizer and potassium fertiliLer. In our result analysis, we use △Y to modify our method and we got the maximum output in our further discussion,we also analyzed thereason that theoutput is not zero when we don't use fertilizer. At last,we discussedthe strong andweak points of our medel.