水肥耦合对马铃薯干物质生产量的影响  

The Effect of Water and Fertilizer Coupling on Dry-matter Production of Potato

作　　者：李文证 尹娟[1,2,3] 马国成[1] LI Wen-zheng YIN Juan MA Guo-cheng(College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China Engineering Research Center of Water Resource Efficient Utilization of Modern Agriculture in Arid Area, Ministry of Education, Yinchuan 750021, China Ningxia Engineering Technology Research Center of Water-saving Irrigation and Water Resources Regulation, Yinchuan 750021, China)

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]旱区现代农业水资源高效利用教育部工程中心,银川750021 [3]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021

出　　处：《节水灌溉》2016年第10期15-19,24,共6页Water Saving Irrigation

基　　金：国家自然科学基金项目(51169020);教育部"长江学者和创新团队发展计划"创新团队项目(IRT 1067);宁夏大学研究生创新项目(GIP2015049)

摘　　要：通过大田试验,以灌溉定额X_1、氮肥量X_2、磷肥量X_3、钾肥量X_4为试验因素,选用4因素10水平的均匀设计,研究水肥耦合对马铃薯干物质生产量的影响。通过逐步回归建立干物质生产量与试验因素的回归模型,结果表明:各因素对马铃薯干物质生产量的影响顺序为:X_3>X_1>X_2>X_4;两因素交互作用对马铃薯干物质生产量影响顺序为:X_31X_2>X_1X_4>X_3X_4>X_2X_3>X_1X_3;当X_1为1 036.27 m/hm2,X_2为241.05kg/hm^2,X_3为166.18kg/hm^2,X_4为77.60kg/hm^2时马铃薯干物质最优生产量为1.975 488万kg/hm^2。Through field experiment, selecting four experimental factors, including irrigation norm（X1 ）, nitrogenous fertilizer （X2）, phosphate fertilizer （X3）, and potash fertilizer （X4）, adopting the uniform design of factors with ten levels for each factor, the effect of water and fertilize coupling on dry-matter production of potato is studied. The regression models between dry-matter pro- duction and experimental factors are established through stepwise regression. The results show that the order of the effect of each factor on dry-matter production from big to small is X3, X1, X2, X4 ; the order of the interaction effect of two factors on dry-matter production from big to small is X1X2, X1X4, X3X4, X2X3, X1X3 ; the optimal dry-matter production, 19 754. 88 kg/hm2, can be achieved when the X1, X2, X3 and X4 are 1 036.27, 241.05, 166.18 and 77.60 kg/hm2 , respectively.

关 键 词：马铃薯 干物质 水肥耦合 均匀设计 回归模型 

分 类 号：S532[农业科学—作物学]