水肥耦合效应对沙葱产量的影响  

Effect of water and fertilizer coupling on the yield of Allium mongolicum

作　　者：詹昌峰 战超 陈国双[2] 鲁新蕊[2] 邵庆春[2] 朴世领[1] ZHAN Changfeng;ZHAN Chao;CHEN Guoshuang;LU Xinrui;SHAO Qingchun;PIAO Shiling(Agricultural College of Yanbian University,Yanji Jilin 133002,China;Northeast Institute of Geography and Agroecology,Chinese Academy of Science,Changchun 130000,China)

机构地区：[1]延边大学农学院,吉林延吉133002 [2]中国科学院东北地理与农业生态研究所,长春130000

出　　处：《延边大学农学学报》2022年第2期47-54,共8页Agricultural Science Journal of Yanbian University

基　　金：战略性先导科技专项(XDA23070503)。

摘　　要：为探究水肥耦合效应对沙葱产量的影响,以引种的甘肃民勤沙葱为试验材料,采用4因素5水平2次正交旋转组合设计,通过盆栽试验建立了沙葱产量与水、氮、磷、钾用量的数学模型,并分析了各单因素效应及水肥耦合效应。结果表明:1)处理7(相对含水量50.14%、施氮量0.049 g/kg、施磷量0.08 g/kg、施钾量0.1 g/kg)产量最小,最小值为0.527 g/株,处理17(相对含水量65%、施氮量0.12 g/kg、施磷量0.08 g/kg、施钾量0.1 g/kg)产量最高,最高值为1.851 g/株;2)水、氮、磷、钾对沙葱产量的影响顺序为,水(X_(1))>氮(X_(2))>磷(X_(3))>钾(X_(4));3)水、氮、磷、钾对沙葱边际产量的影响顺序为,水(X_(1))>磷(X_(3))>氮(X_(2))>钾(X_(4))。4)水氮、水磷、水钾对沙葱产量的耦合效应均为正耦合效应。水肥用量过高或过低均不利于沙葱产量的提高,水肥合理配施能显著提高沙葱产量。当水、氮(N)、磷(P_(2)O_(5))、钾(K_(2)O)的实际用量分别为78.34%,609 kg/hm^(2),294 g/kg,357 kg/hm^(2)时,理论上获得最大产量为32306.4 kg/hm^(2)。This study used Allium mongolicum from Minqin,Gansu Province as the experimental material to explore the effects of water and fertilizer coupling on the yield of A.mongolicum.The mathematical model of yield and four factors,i.e.,water,nitrogen(N),phosphorus(P)and potassium(K),was established using quadratic orthogonal rotation combination design of four factors and five levels in pot experiment,and the fertilizer coupling effect was analyzed.The results showed that the yield in the group 17(i.e.,65%watering,0.12 g/kg nitrogen,0.08 g/kg phosphorus,0.1 g/kg potassium)was the highest(1.851 g/plant)whereas that in the group 7(i.e.,50.14%watering,0.049 g/kg nitrogen,0.08 g/kg phosphorus,and 0.1 g/kg potassium)was the lowest(0.527 g/plant).The order of water,nitrogen,phosphorus,and potassium effect on the yield was:water>nitrogen>phosphorus>potassium,and that on the marginal yield was:water>phosphorus>nitrogen>potassium.In addition,water-nitrogen,water-phosphorus,and water-potassium had positive coupling effect on the yield;overwatering and overfertilize were not beneficial for increasing the yield.The predicted yield was 32306.4 kg/hm at the optimized conditions(i.e.,78.34%watering,609 kg/hm nitrogen,2,294 kg/hmphosphorus,and 32306.4 kg/hm potassium).

关 键 词：水肥耦合 沙葱 产量 2次正交旋转 

分 类 号：S647[农业科学—蔬菜学] S158[农业科学—园艺学]