Effects of Mixed Fertilizer Applications on Hay Yield of Alfalfa  

作　　者：GAO Xiang-pei LI Yun-qi TANG Shu-xia LI Jian-guo CAO Yu-feng LI Qiu-feng YU He-xing LIYue-e YANG Wu 

机构地区：[1]College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071001, China [2]Bureau of Agriculture, Huanghua 061100, China [3]Animal Husbandrv Bureau. Huanohua 061100. China

出　　处：《Animal Husbandry and Feed Science》2011年第1期43-45,48,共4页动物与饲料科学（英文版）

基　　金：funded by the National Key Technology R&D Program (2006BAD04A10);the Major Scientific and Technological Innovation Projects of Hebei Province (07227146Z);the Earmarked Fund for Modern Agro-industry (Dairy Industry) Technology Research System (nycytx-10)

摘　　要：[ Objective] To study the effects of combined application of different elements on alfalfa hay yield. [ Medthod] Potassium sulfate, ammonium chloride, superphosphate and magnesium oxide were applied to alfalfa field in the experiment, and quaternary quadratic regression orthogonal combination was used to examine the effects of the experiment factors on hay yield of alfalfa. [ Result] The order of targets based on the effects on hay yield is as follows： potassium sulfate 〉 ammonium chloride 〉 magnesium oxide 〉 superphosphate. Among them, the potassium sulfate had a significant impact on alfalfa hay yield. The interaction between potassium sulfate and magnesium oxide also had a significant impact on alfalfa hay yield. [ Conclusion] The optimal cultivation measures for alfalfa hay yield of more than 19 224.6 kg/hm^2 are as follows： potassium sulfate, 163.253 - 181.679 kg/hm^2 ; ammonium chloride, 155.877 - 174.258 kg/hm^2 ; superphosphate, 566.177 - 632.924 kg/hm^2 ; and magnesium oxide, 30.060 - 33.628 kg/hm^2.[ Objective] To study the effects of combined application of different elements on alfalfa hay yield. [ Medthod] Potassium sulfate, ammonium chloride, superphosphate and magnesium oxide were applied to alfalfa field in the experiment, and quaternary quadratic regression orthogonal combination was used to examine the effects of the experiment factors on hay yield of alfalfa. [ Result] The order of targets based on the effects on hay yield is as follows： potassium sulfate 〉 ammonium chloride 〉 magnesium oxide 〉 superphosphate. Among them, the potassium sulfate had a significant impact on alfalfa hay yield. The interaction between potassium sulfate and magnesium oxide also had a significant impact on alfalfa hay yield. [ Conclusion] The optimal cultivation measures for alfalfa hay yield of more than 19 224.6 kg/hm^2 are as follows： potassium sulfate, 163.253 - 181.679 kg/hm^2 ; ammonium chloride, 155.877 - 174.258 kg/hm^2 ; superphosphate, 566.177 - 632.924 kg/hm^2 ; and magnesium oxide, 30.060 - 33.628 kg/hm^2.

关 键 词：FERTILIZER ALFALFA Hay yield Quadratic rotational regression orthogonal combination 

分 类 号：TQ444[化学工程—化学肥料工业] S54[农业科学—作物学]