基于熵权的模糊物元模型优选夏玉米沟灌方式

Optimization of fuzzy matter element model based on entropy for summer maize in furrow irrigation

为了探究沟灌方式下不同灌水处理对夏玉米主要性状及水资源利用效率的影响,采用基于熵权法的模糊物元模型,以大田夏玉米为试验材料,进行了常规沟灌(conventional furrow irrigation,CFI)和宽垄沟灌(wide-ridge furrow irrigation,WFI)种植下3种灌水水平(土壤水分控制下限分别设置为田间持水量的60%,70%和80%)对夏玉米形态指标(株高、叶面积)、产量性状(穗长、穗粗、百粒质量、产量)以及水资源利用效率(灌溉利用效率、水分生产效率)的影响分析.结果表明:同一水分处理下,夏玉米WFI灌溉组合方案优于CFI灌溉组合方案;对于水资源相对丰富地区建议采用WFI-70%θ灌溉方案,对于水资源相对匮乏地区建议采用WFI-60%θ灌溉方案;基于熵权法的模糊物元模型较CRITIC法的模糊物元模型评价效果更好,基于熵权法的模糊物元模型对沟灌夏玉米主要性状和水资源利用效率方面具有一定的应用价值.该研究为沟灌夏玉米合理灌溉提供了科学依据.

In order to explore the influence of different irrigation treatments on main characters and water use efficiency of summer maize,two kinds of planting pattern(conventional furrow irrigation,CFI and wide-ridge and furrow irrigation,WFI)were compared under different water treatments,and the three irrigation levels(The soil water control limits were respectively set at 60%,70%and 80%of field water capacity)were set up.Using the fuzzy matter element model method based on entropy weight and CRITIC,the summer maize morphological indexes of different water treatment plants CFI and WFI planted(plant height,leaf area),yield traits(ear length,ear diameter,100 seed weight and yield)and water use efficiency(production efficiency of water use efficiency,irrigation)were analyzed.The result shows that the WFI planting mode of summer maize is better than the CFI planting mode under the same water treatment condition.For areas with relatively abundant water resources,the WFI-70%θirrigation scheme is recommended and the WFI-60%θirrigation scheme is recommended for areas where water resources are relatively scarce.The fuzzy matter element model method based on entropy weight and CRITIC is of a certain application value to the main characters of summer maize in furrow irrigation and water use efficiency.This study provides a scientific basis for reasonable irrigation and furrow irrigation in summer maize.