甘肃渭源县当前生产条件下玉米施肥效果和贡献率研究  

Study on Fertilization Effect in Maize and Its Contribution Rate Under Current Condition of Weiyuan County in Gansu Province

作　　者：仲彩萍[1] 孙新荣[1] 张维彪 ZHONG Caiping;SUN Xinrong;ZHANG Weibiao(Agricultural Technology Extension Station of Weiyuan County,Dingxi,Weiyuan,Gansu 748200,China)

机构地区：[1]渭源县农业技术推广中心,甘肃渭源748200

出　　处：《陕西农业科学》2022年第2期84-86,共3页Shaanxi Journal of Agricultural Sciences

基　　金：甘肃省科技计划资助(19CX2NJ003,18CX3ZJ033-子课题1)。

摘　　要：为掌握渭源县玉米配方施肥氮磷钾肥料利用率、贡献率和农学效率,开展了全配方、缺氮、缺磷、缺钾试验。结果表明,配方施肥对玉米主要经济性状、籽粒产量、茎叶产量有着显著影响。玉米籽粒产量氮磷钾配方施肥分别较配方无氮、配方无磷、配方无钾增产5.32%、114.48%、11.7%,玉米茎叶产量氮磷钾配方施肥分别较配方无氮、配方无磷、配方无钾增产18.72%、171.39%、12.60%。玉米氮、磷、钾肥利用率分别为38.88%、17.24%、62.57%,氮、磷、钾肥贡献率分别为5.05%、53.38%、10.47%,氮、磷、钾肥农学效率分别为2.09 kg/kg、33.18 kg/kg、16.28 kg/kg。In order to explore the utilization rate,contribution rate and agronomic efficiency of formula N,P and K fertilization in maize in Weiyuan county,an experiment was conducted under treatments of the whole formula,N,P and K deficiency.The results showed that formula fertilization had significant effect on the main economic characters,grain yield,stem and leaf yield of maize.Under treatments of formula N,P and K fertilization,the yield of maize grain increased by 5.32%,114.48%and 11.7%compared with no N,P and K application,respectively.The yield of maize stems and leaves increased by 18.72%,171.39%and 12.60%compared with no N,P and K application,respectively.The utilization rates of N,P and K were 38.88%,17.24%and 62.57%,respectively.The contribution rates of N,P and K were 5.05%,53.38%and 10.47%,respectively.The agronomic efficiency of N,P and K were 2.09 kg/kg,33.18 kg/kg and 16.28 kg/kg,respectively.

关 键 词：玉米 肥料利用率 

分 类 号：S513[农业科学—作物学]