水氮耦合对滁菊水分利用效率的影响  

Effect of Water and Nitrogen Fertilizer Coupling on Water Use Efficiency of Chuzhou Chrysanthemum morifolium

作　　者：李孝良[1,2] 谢晓露[1] 张健[1] 汪建飞[1,2] 谢越[1] 

机构地区：[1]安徽科技学院资源与环境学院,安徽凤阳233100 [2]农业部生物有机肥创制重点实验室,安徽蚌埠233400

出　　处：《中药材》2016年第2期245-249,共5页Journal of Chinese Medicinal Materials

基　　金：安徽省高校优秀青年人才支持计划;安徽科技学院农业资源与环境重点学科(AKZDXY2015A02);安徽省科技攻关项目(1301032151)

摘　　要：目的:探讨人工栽培滁菊适宜的水氮管理模式。方法:采用盆栽试验,水、氮二因素二次回归旋转组合设计,研究水氮耦合对滁菊耗水量及水分利用效率的影响。结果:滁菊不同生育时期耗水量有较大差异,以现蕾期滁菊耗水强度较大。水氮耦合对滁菊苗期、分枝期、现蕾期、采摘期耗水量和生育期总耗水量以及水分利用效率有显著影响,水分因子对滁菊各生育时期耗水量及总耗水量的影响大于氮肥因子,氮肥因子对滁菊水分利用效率的影响大于水分因子,水肥间存在显著交互作用;当水分为田间持水量的71.35%,施氮量0.268 N/kg,滁菊水分利用效率最高,达3.435 g/kg·株。结论:从滁菊水分利用效率角度考虑,滁菊水氮管理以中低水平水分管理和中高水平氮肥用量较为适宜。Objective： To discuss the suitable water and nitrogen management modes in cultivating Chuzhou Chrysanthemum morifolium. Methods ： According to two-factors quadratic regression rotation experimental designs, the effect of water and nitrogen fertiliz- er coupling on water consumption and water use efficiency（WUE） of Chuzhou Chrysanthemum morifolium were studied by pot experi- ment. Results ： The water consumption of Chuzhou Chrysanthemum morifolium in different growth stages had big variation, and the water consumption rate（WCR） of squaring stage was higher. There were remarkable effect of water and nitrogen coupling on water consumption of Chuzhou Chrysanthemum morifolium in different growth stages and WUE. Effect of water on water consumption of Chuzhou Chrysan- themum morifolium in different growth stages was higher than that of nitrogen fertilizer, but effect of nitrogen fertilizer on WUE were higher than that of water,and there were significant interaction between water and nitrogen. When the soil water and nitrogen fertilizer was - 0. 2063 level and 0. 4793 level, respectively, namely, keeping 71.35% of the field water capacity and 0. 268 N/kg of nitrogen fertilizer, the WUE reached maximum up to 3. 435 g/kg per plant. Conclusion ： Considered from WUE, the suitable management mode of water and nitrogen of Chuzhou Chrysanthemum morifolium is to keep low-to-middle soil water level and middle-to-high nitrogen fertiliz- er.

关 键 词：水氮耦合 滁菊 耗水量 耗水强度 水分利用效率 

分 类 号：R282.2[医药卫生—中药学]