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作 者:李莉[1] 展铭 陈宏伟[1] 万正煌[1] 刘昌燕[1] 伍广洪[1]
机构地区:[1]湖北省农业科学院粮食作物研究所,武汉430064 [2]华中农业大学植物科学技术学院,武汉430070
出 处:《湖北农业科学》2015年第23期5835-5839,共5页Hubei Agricultural Sciences
基 金:国家现代农业产业技术体系建设项目(CARS-09);科技部国际合作重点项目(2011DFB31620);湖北省农业科技创新中心资助项目(2007-620-001-03)
摘 要:通过田间试验与采样分析研究了磷肥施用对绿豆[Vigna radiata(Linn.)Wilczek.]氮、磷、钾积累量和产量构成因子的影响。结果表明,绿豆植株中氮、磷、钾养分积累量随磷肥施用量的增加呈抛物线变化趋势,施磷提高了子粒和茎秆中氮、磷、钾的积累量,其中磷素用量为90~135 kg/hm^2时,养分积累量最高。施用磷肥效应方程为y=1 024.8+5.187 9x-0.023 1x2(R^2=0.974),说明合理施用磷肥可以提高磷肥利用率和绿豆产量,施用过量则出现报酬递减现象。Through the field experiment and the sampling analysis, effect of phosphorus fertilizer on nitrogen,phosphorus and potassium accumulation and yield component of mung bean was studied. The results indicated that there was a parabola regular pattern of the nutrient accumulation while the application rate of phosphorus fertilizer increased. The total accumulation of nitrogen,phosphorus and potassium in the mung bean stems and pods was increased with the application rate of phosphorus fertilizer increasing,and the maximum was at 90 ~135 kg / hm^2 phosphorus fertilizer. The regression equation was y =1 024.8 +5.187 9x-0.023 1x2(R^2=0.974),which indicated that proper phosphorus application could increase mung bean yield and improve the utilization efficiency, but excessive amount of fertilizer application should reduce the fertilizer usage efficiency.
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