农田林网主林带透风系数和疏透度关系探讨

A preliminary study on the relationship between ventilation coefficient and porosity in pricipal shelter belt of farmland

根据测定农田林网主林带透风系数(o_o)和疏透度(p)35组数据,经统计分析并建立7个数学模型,其中最优数学模型为::o=0.5025—1.6964自+8.4139日~2—8.07089~3。

On the basis of 35 sets data measured from the platical principal she-lter belt, 7 mathematic models have been established. Among them, the optimized model is: α = 0.5025 -1.6964β + 8.4139β2 - 8.0708β3