Nutrient Limiting Factor and Agronomic Efficiency of Wheat in Fluvo-aquic Soil District in Northwest of Shandong Province  

鲁西北潮土区小麦养分限制因子及农学效率研究(英文)

作　　者：马征[1] 魏建林[2] 郭洪海[2] 张柏松[1] 董晓霞[2] 徐长英[1] 崔荣宗[2] 

机构地区：[1]山东省植物营养与肥料重点实验室,山东省农业科学院农业资源与环境研究所,山东济南250100 [2]山东省农业科学院农业资源与环境研究所,山东济南250100

出　　处：《Agricultural Science & Technology》2013年第8期1191-1194,共4页农业科学与技术（英文版）

基　　金：国家科技支撑计划(2008BADA4B07);国际植物营养研究所项目(IPNI)~~

摘　　要：[Objective] This study aimed to provide basis for rational fertilizer application of wheat in fluvo-aquic soil in the northwest of Shandong Province.[Method] In this paper,the treatments of reduced N,P and K were set in order to explore the effects of fertilizer recommendation based on ASI systematic approach on wheat yield,agronomic efficiency and recovery rate of nutrients.[Result] Nitrogen was the main limiting factor for wheat production in that area,followed by phosphorus,and the third was potassium.Compared with the optimum treatment （OPT）,the reduction of N,P and K reduced the grain yield obviously,which came up to 22.4％,14.4％ and 13.4％ respectively.There were no obvious differences in grain yield among Farmer＇s Fertilization Practice （FP）,60％ OPT-N and OPT treatment.[Conclusion] Agronomic efficiency of N,P and K was 6.3,12.9 and 10 kg/kg respectively.The recovery rates of N,P and K in wheat season were 16.41％,17.27％ and 27.27％ respectively.[目的]为鲁西北潮土区小麦种植的合理施肥提供依据。[方法]在小麦生产上,设置N、P、K减素处理,研究ASI方法推荐施肥对小麦产量、养分的农学效率、养分回收率的影响。[结果]结果表明,氮素为当地小麦生产的主要限制因子,其次是磷素,钾素对小麦增产影响最小。N、P、K减素处理较推荐施肥(OPT)处理减产均达到显著性水平,分别减产22.4%、14.4%、13.4%。农民习惯施肥(FP)、60%OPT-N和OPT处理间小麦产量没有明显差异。[结论]在本研究中,氮、磷、钾的农学效率分别为N 6.3 kg/kg、P2O512.9 kg/kg和K2O 10 kg/kg。氮、磷、钾肥料的当季回收率分别为16.41%、17.27%和27.27%。

关 键 词：WHEAT Fluvo-aquic soil YIELD Nutrient limiting factor Agronomic efficiency 

分 类 号：S512.1[农业科学—作物学]