水肥耦合对马铃薯淀粉含量的影响  

Effects of Water and Fertilizer Coupling on the Starch Content of Potato

作　　者：桑红辉 邱小琮[2] 尹娟[1,3] 

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]宁夏大学生命科学学院,银川750021 [3]旱区现代农业水资源高效利用教育部工程中心,银川750021

出　　处：《节水灌溉》2015年第5期5-8,共4页Water Saving Irrigation

基　　金：国家自然科学基金(51169020);宁夏自然科学基金研究项目资助(NZ1157);教育部"长江学者和创新团队发展计划"创新团队项目(IRT 1067)

摘　　要：通过马铃薯膜下滴灌水肥耦合盆栽试验,以补灌定额(X1)、氮肥施量(X2)、磷肥施量(X3)、钾肥施量(X4)为试验因素,选用4因素5水平的均匀设计,研究不同水、氮、磷、钾配施对马铃薯淀粉含量的影响,建立起马铃薯淀粉含量与灌水量、氮、磷、钾施用量的关系方程。结果表明:各因素对马铃薯淀粉含量的影响顺序为:X3>X2>X1>X4,各因子交互作用对马铃薯淀粉含量影响顺序为:X1X3>X1 X2>X1 X4,二次项X1、X2、X3系数为负,说明灌水量、氮肥施量、磷肥施量过多和不足均会对淀粉含量产生副作用。以马铃薯淀粉含量为目标函数,最大值为17.60%时,各补水时期灌水量最佳分配为:补灌定额为930m3/hm2,施氮量、施磷量、施钾量分别为180、240、276.15kg/hm2。Through the experiment of drip irrigation under film of water and fertilizer coupling potted potato,with irrigation quota（X1）,nitrogen fertilizer（X2）,phosphate fertilizer（X3）,potash fertilizer（X4）as experiment factors,uniform design with 4factors and 5levels,of different water,nitrogen,phosphorus,potassium fertilizer on starch content in potato,establish the relation equation of starch content in potato and irrigation,nitrogen,phosphorus,potassium fertilizer.The results show that：the influence of various factors on the starch content of potato order is：X3X2X1X4,the order of influence of each factor interaction on potato starch content is：X1X3 X1 X2X1 X4,two X1,X2,X3 coefficient is negative,the amount of irrigation,nitrogen fertilizer,phosphate fertilizer application amount of excess and deficiency can cause side effects the content of starch.Starch content of potato as the objective function,the maximum value is 17.60%,the optimal allocation of irrigation water period：the irrigation quota of 930m3/hm2,nitrogen,phosphorus,potassium fertilizer is 180,240,276.15kg/hm2 respectively.

关 键 词：马铃薯 水肥耦合 补灌定额 淀粉含量 

分 类 号：S532[农业科学—作物学]