水肥耦合对苦荞产量的影响  

Effects of Water and Fertilizer Coupling on Yields of Tartary buckwheat

作　　者：谭茂玲[1,2] 贾晓凤[1] 蔡晓曼[1] 张曦[1] 曾雪玲[1] 万燕[1,2] 向达兵[1,2] 

机构地区：[1]成都大学药学与生物工程学院,四川成都610106 [2]成都市荞麦产业化工程技术研究中心,四川成都610106

出　　处：《成都大学学报（自然科学版）》2015年第4期331-335,共5页Journal of Chengdu University（Natural Science Edition）

基　　金：国家现代农业产业技术体系建设专项资金(CARS-08-03B);"十二五"国家科技支撑计划课题(2014BAD07B04);四川省教育厅自然科学基金(13ZB0341);成都大学校科技发展基金(2015XJZ14)资助项目

摘　　要：水分和肥料是农业生产中影响作物生长的2个重要环境因子,合理地灌溉和施肥是增加作物产量的重要途径.试验采用4因素5水平二次通用旋转组合设计,通过盆栽水肥耦合试验,研究水肥耦合对苦荞产量的影响.结果表明:氮、磷、钾及水分单因素效应对苦荞产量的影响均呈抛物线趋势,影响顺序为,灌水量>氮肥>钾肥>磷肥;水肥对苦荞产量的影响存在耦合效应,影响最大且达到显著水平的是水氮耦合,其他耦合如氮磷耦合、氮钾耦合、磷钾耦合、水磷耦合和水钾耦合对产量影响效果均不显著;当各因素为,x1=0.205、x2=0.0821、x3=0.0846、x4=0.267,即实际水肥耦合配比为氮肥476 kg/hm2、磷肥333 kg/hm2、钾肥279 kg/hm2、灌水量4 608 L/hm2,可获得最优水肥耦合模型的苦荞产量.Water and fertilizer in agricultural production are two important environmental factors that affect the crop growth,and appropriate irrigation and fertilization are important approaches to increase the yields. The experiment adopts the quadratic general spinning design with four factors and five levels. Then,through potted water-fertilizer coupling experiment,the paper studies the effects of waterfertilizer coupling on Tartary buckwheat yields. The results show that single factors such as nitrogen,phosphate,potassium and water affect Tartary buckwheat yields parabolically. The irrigation amount serves as the main factor affecting Tartary buckwheat yields,nitrogen comes the second,potassium is the third factor and phosphorus has the smallest influence. There exist coupling effects of water and fertilizer on Tartary buckwheat. The coupling effects of nitrogen and phosphorus are the highest,and then come the coupling effects of nitrogen and potassium,potassium and phosphorus,and water and phosphorus. However,the coupling effects of water and potassium on yields are not significant. When these factors are x1= 0. 205,x2= 0. 0821,x3= 0. 0821 and x4= 0. 267,which means the matching ratio of the water and fertilizer coupling model reaches nitrogen 476 kg / hm2,phosphorus 333 kg /hm2,potassium 279 kg / hm2 and water 4 608 L / hm2,we could obtain the optimal yields of Tartary buckwheat.

关 键 词：苦荞 水肥耦合 产量 

分 类 号：S517[农业科学—作物学]