滴灌条件下水肥耦合对青花菜生理特性及产量和品质的影响  

Effects of Water and Fertilizer Coupling on Physiological Characteristics,Quality of Broccoli and Total N of Soil

作　　者：胡云飞[1] 郁继华[1] 肖雪梅[1] 李录山[1] 王博[1] 杨兵丽 周箬涵 薛娟[1] 张国斌[1] 

机构地区：[1]甘肃农业大学园艺学院,兰州730070

出　　处：《灌溉排水学报》2016年第2期72-76,共5页Journal of Irrigation and Drainage

基　　金：国家现代农业产业技术体系建设资金项目(CARS-25-C-07);国家自然科学基金项目(31260473)

摘　　要：设置灌水、施肥二因素,研究了滴灌条件下水肥耦合效应对青花菜产量、水分利用效率、品质、生理特性及土壤全氮的影响。结果表明,灌水量相同条件下,叶绿素和水势均值的基本趋势为F2水平>F1水平>F3水平>F4水平;施肥量相同,叶绿素、水势均值表现为W1水平>W2水平>W3水平。产量、水分利用效率和品质以W2F2处理较高,且水肥互作对产量和水分利用效率有显著影响。不同水肥耦合处理下,随土层加深,全氮逐渐减小;且在相同施肥水平下,随灌水量减少而减少;在相同水分条件下,土壤全氮随施肥量的减小呈先增加后降低趋势。综合评价,在滴灌条件下,W2F2处理为最优组合。The effects of water and fertilizer coupling on broccoli yield,water use efficiency,quality,physiological characteristics and total N of soil under drip irrigation were studied in this experiment.Results showed that under the same irrigation amount,the basic trends of chlorophyll content and water potential were F2F1F3F4;under the same fertilization rate,chlorophyll content and water potential were W1W2W3.The yield,water use efficiency and quality of W2F2treatment（medium water and fertilization）were the highest and there were significant effects of water and fertilizer coupling on yield and water use efficiency of broccoli.Total N of soil decreased with the increase of soil depth in all the treatments.Under the same fertilization rate,total N of soil decreased with the decrease of irrigation amount.Under the same irrigation amount,total N of soil increased firstly and decreased at last with the increase of fertilization.To sum up,the treatment of W2F2 was the optimum combination under drip irrigation.

关 键 词：水肥耦合 青花菜 滴灌 产量 全氮 

分 类 号：S635.3[农业科学—蔬菜学] S275.6[农业科学—园艺学]