基于PPR无假定建模的滴灌带灌水均匀度预测模型

The Irrigation Uniformity Prediction Model for Drip Irrigation Belt Based on PPR without Assumption Modeling

本文采用均匀正交设计试验方案,采用内镶贴片式滴灌带的铺设坡度、工作压力、长度作为试验因素,对灌水均匀度的影响规律进行研究,并用过PPR无假定建模建立了该内镶贴片式滴灌带灌水均匀度的预测模型。结果表明,工作压力与铺设长度对该滴灌带的灌水均匀度具有显著影响,但坡度无显著影响,三因素对灌水均匀度影响的主次顺序为工作压力>铺设长度>铺设坡度。该滴灌带灌水均匀度随铺设长度的增加呈逐渐下降趋势;随压力增加,灌水均匀度先增加后降低。

The uniform orthogonal design test scheme is adopted,and the laying slope,working pressure,and length of the embedded patch drip irrigation tape are used as the test factors to study the influence law of irrigation uniformity,and the PPR non-assuming modeling is used to establish the inlay.Prediction model for drip irrigation uniformity of patch drip irrigation tape.The results show that the working pressure and laying length have a significant influence on the drip irrigation uniformity of the drip irrigation belt,but the slope has no significant influence.The primary and secondary order of the three factors on the irrigation uniformity is working pressure>laying length>laying slope.The irrigation uniformity of the drip irrigation belt gradually decreases with the increase of the laying length;as the pressure increases,the drip irrigation uniformity first increases and then decreases.