基于熵权的TOPSIS模型在黄瓜适宜抗蒸腾产品评价中的应用

为了筛选适宜的抗蒸腾产品,提高黄瓜抗旱性,选用2种代谢型、2种成膜型和1种生长调节剂型共5种抗蒸腾产品进行叶面喷施处理,以喷施清水作为对照,测定黄瓜植株生长、植株生物量和产量品质指标,将熵权法和TOPSIS法相结合,对11个评价指标及6个评价方案进行综合分析。结果表明,代谢型国光抗蒸腾剂处理后黄瓜株高比CK提高1.64%,叶片SPAD比CK提高7.37%,地上部和地下部含水率比CK分别提高2.7和9.7个百分点,黄瓜维生素C含量比CK提高25.70%,利用基于熵权的TOPSIS模型分析,代谢型国光抗蒸腾剂处理与最优值的相对接近度为0.9918,在所有处理中最高。黄瓜整个生育期叶面喷施3次代谢型国光抗蒸腾剂,可以有效提高抗旱能力,促进生长和产量品质提升。

Application of TOPSIS model based on entropy weight to evaluate coupling effect of suitable anti-transpiration products on cucumber

Five anti-transpiration products,including two metabolic type,two film-forming type and one growth regulator,were sprayed on the leaves to select suitable anti-transpiration product for improving drought tolerance of cucumber.Spraying water was used as control and the growth index,biomass index,yield and quality index of cucumber were measured.The TOPSIS model based on entropy weight were used to evaluate 11 indexes and 6 comprehensive evaluation plan.The results showed that the height of cucumber treated with metabolized Guoguang anti-transpiration increased by 1.64%,the SPAD of leaves increased by 7.37%,the water content of shoot and underground increased by 2.7 and 9.7 percentage points compared with CK,the content of vitamin C in cucumber increased by 25.70%.The relative close degree of the metabolized Guoguang anti-transpiration treatment and the optimal value was 0.9918,the highest among all treatments.Cucumber leaves were sprayed with metabolic Guoguang antitranspirant three times throughout the whole growth period,it could improve the drought resistance effectively,promote growth,yield and quality improvement.