增效氮肥对玉米生长及土壤无机态氮浓度的影响  

Effect of Efficiency Nitrogen Fertilizer on Corn Growing and Soil Inorganic Nitrogen Concentration

作　　者：王建成[1,2] 车宗贤[1,2] 蔡立群[1] 

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070 [2]甘肃省农业科学院土壤肥料与节水农业研究所,甘肃兰州730070

出　　处：《甘肃农业科技》2013年第8期25-28,共4页Gansu Agricultural Science and Technology

摘　　要：在靖远县北滩乡井滩村布设大田试验,测定了3种肥料、6个施肥处理对玉米生长及土壤无机态氮浓度的影响。结果表明,在施氮量相同的情况下,与常规施肥和施入等氮硫酸铵相比,施用增效氮肥可使玉米生育期延长4 d,折合产量较常规施肥和施入等氮硫酸铵分别提高10.71%、13.18%,分别增收3 138.74、3 780.74元/hm2,收益率为10.71%、13.18%。室内测定的不同肥料对土壤无机态氮浓度的影响结果表明,施用增效氮肥可延长肥效20～30 d,提高肥料利用率10%以上。Though field experiment, 6 treatments using 3 kinds of fertilizers setted to explore the effects on maize growth in Jingyuan North Beach country of Gansu. The results showed that efficiency nitrogen fertilizer treatment can increase maize growing 4 days than others, increased yield 10.71% and 13.18%, increased income 3 138.74 yuan/hm2 and 3 80.74 yuan/hm2 than conventional fertilization and nitrogen ammonium sulfate treatments. In addition, indoor measurement of the effect of different fertilizer on soil inorganic nitrogen concentration results show that the efficiency of nitrogen fertilizer applied can be applied to extend 20 ~ 30 d, improve the utilization rate of fertilizer by more than 10%.

关 键 词：增效氮肥 玉米 土壤无机态氮 影响 

分 类 号：S513[农业科学—作物学] S643.3