宁夏玉米田间肥效研究

配方施肥、传统施肥及不施肥处理对比研究表明,玉米大喇叭口期比不施肥处理提前5d,比传统施肥处理提前2d,玉米抽雄期比不施肥处理提前4 d;配方施肥处理平均穗粒数475粒,比传统施肥处理多55粒,比不施肥处理多171粒;配方施肥处理玉米千粒重为357 g,比传统施肥处理多32 g,比不施肥处理多54 g.通过玉米产量与经济效益分析,配方施肥处理比对照增产7 618.5 kg/hm2,增产127％;比传统施肥增产1 405.5 kg/hm2,增产11％.

Study on Fertilizer Effect of Com in Ningxia

Through comparing formula fertilization with traditional fertilization and no fertilization processing, big trumpet period of corn was 5 d earlier than no fertilization treatment and 2 d earlier than conventional fertilization treatment, and tasseling stage of corn was 4 d earlier than no fertilization treatment. Spike grain number of formula fertilization was 475 on average, and 55 grains more than traditional fertilization treatment, and 171 grains more than no fertilization treatment. Corn grain weight of formula fertilization treatment was 357 g, and 32 g more than conventional fertilization treatment and 54 g more than no fertilization treatment. By analysis on yield and economic benefit of maize, yield of formula fertilization treatment was increased by 7 618.5 kg/hm2 than no fertilization with increasing by 127%, and increased by 1 405.5 kg/hm2 than conventional fertilization treatment with increasing by 11%.