氮磷钾肥配施对大豆生长发育及产量的影响  

Effects of Combined Application of NPK Fertilizers on Growth and Yield of Soybean

作　　者：苗任重 任秀荣 王建立 贡庆勇 刘志强 赵景云 

机构地区：[1]驻马店市农业科学院,河南驻马店463000 [2]正阳县大林镇农业服务中心,河南正阳463600

出　　处：《湖南农业科学》2014年第3期29-31,共3页Hunan Agricultural Sciences

基　　金：河南省农业科技成果转化资金项目(132201110018)

摘　　要：采用大田试验,以驻豆7号为供试材料,研究了不同氮、磷、钾肥配比对大豆株高、叶片SPAD值、地上干物质重、根瘤数以及产量构成因子、产量的影响。结果表明：与不施肥对照比,施肥处理能显著提高大豆产量6.59%～21.98%,科学合理的氮磷钾肥配施,能促进大豆生长发育,增加干物质积累,调节大豆产量构成因素,增加产量。在豫南地区,为获得大豆高产,最合理的氮磷钾肥配比为N：P2O5：K2O=2：4：3,推荐施肥量为：N 45 kg/hm2、P2O5 90 kg/hm2、K2O 67.5 kg/hm2。Using field experiment and Zhudou No.7 to study the effects of combined application of NPK fertilizers with different ratios on plant height, leaf SPAD value, dry-matter weight of overground part, number of root nodule, yield and yield components of soybean. The results showed that compared with the control of no fertilization, the fertilization treatments could improve the yield of soybean significantly by 6.59%～21.98%; scientific and reasonable combined application of NPK fertilizers can promote the growth and development of soybean plant, increase the accumulation of dry matter, adjust the yield components, and increase soybean yield significantly. In the southern Henan province, to obtain the high-yield of soybean, the optimum ratio of NPK fertilizers was N：P2O5：K2O=2：4：3, and the optimal fertilizer rate of N, P2O5 and K2O was 45 kg/hm2, 90 kg/hm2 and 67.5 kg/hm2, respectively.

关 键 词：大豆 氮磷钾肥 生理特性 产量 影响 

分 类 号：S565.1[农业科学—作物学]