基于加权灰色关联模型在灌水方案优选中的应用

Optimization of Irrigation Scheme Based on Weighted Grey Correlation Model

采用加权灰色关联综合评价模型,对于不同灌水下限下夏玉米的耗水量、产量及其构成因素的灌水方式进行优选。结果表明:全生育期夏玉米耗水量随灌水下限的增加而增加;当灌水控制下限到70%田间持水量时灰色关联度最大(0.843,0.844),其产量和水分利用率最高。加权灰色关联模型评价结果与试验区试验结果相吻合。因此,加权灰色关联模型可应用于灌水方案优选的研究中,并为该地区夏玉米生产提供科学的理论指导。

In this paper,the weighted grey relational comprehensive evaluation model was used to optimize the irrigation method of summer maize with different irrigation lower limit.The results showe that the water consumption of summer maize increased with the increase of the lower limit of irrigation water control;when the lower limit of irrigation water control reached 70%of the field water holding capacity,the grey correlation degree in the evaluation was the largest(0.843,0.844),and the yield and water utilization rate of summer maize were the highest.The evaluation results of the weighted grey relational comprehensive evaluation model were consistent with the field test results.Therefore,the weighted grey relational model can be applied to the study of optimal irrigation scheme and provide scientific theoretical guidance for summer maize production in this region.