不同施肥模式对春玉米产量、品质与氮肥利用及玉米地氮流失的影响
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国家科技支撑计划项目(2007BAD87B11,2008BADA7B07)、国际合作项目(2007DFA30850)、湖南省科技厅重点项目(2006NK2001)、一般项目(2008SK4051,2007NK3093,2007FJ4237)和湖南省教育厅重点项目(07A028)资助


Effects of different organic fertilization modes on yield, quality, fertilizer nitrogen utilization of spring maize and nitrogen loss from field
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    摘要:

    为了寻找一种既能使作物高产、优质又环境友好的施肥模式,在天然降雨条件下,采用田间试验方法,在洞庭湖地区研究了7种不同施肥模式对春玉米棒长、单株质量、百粒重、产量、粗蛋白含量、氮累积量、氮肥利用率及玉米地总氮、硝态氮、铵态氮随地表径流流失的影响。结果表明:与不施肥对照相比,20% 的沼肥和30% 的堆肥2种施肥模式可显著改善春玉米农艺性状,分别使春玉米产量提高了69% 和73%,粗蛋白含量提高了42% 和36%,植株氮累积量增加了125% 和117%,氮肥利用率较高,与施纯化肥处理相比,还可减少玉米种植期间玉米地土壤总氮随地表径流的流失量,减少幅度分别为25.1%和38.3%,从而减少了玉米地土壤造成的农业面源污染。因此,这两种施肥模式可以在洞庭湖地区的春玉米生产中加以推广应用。

    Abstract:

    To find environment-friendly fertilization modes which can increase crop yield and quality, a field experiment with spring maize was conducted to study the effects of 7 different fertilization modes on the cob’s length, yield, nitrogen accumulation, fertilizer nitrogen utilization of corn and the loss of TN, NH4+-N, NO3--N from corn field under natural rainfall condition in Dongting Lake region. The results showed that: The two kinds of fertilization modes, namely, 20% of the Biogas and 30% of pig-manure compost, improved agronomic properties of spring maize, increased yield by 69% and 73%, increased protein content by 42% and 36%, increased nitrogen accumulation by 125% and 117% respectively compared with no fertilization; decreased the surface runoff of TN by 25.1% and 38.3% respectively compared with the chemical fertilization mode. Thus these two modes could promote utilization rate of the nitrogen fertilizer and reduce the risk of agricultural non-point pollution, and should be widely used in spring maize production in Dongting Lake region.

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黄 涛,荣湘民,刘 强,张玉平,谢桂先,彭建伟.不同施肥模式对春玉米产量、品质与氮肥利用及玉米地氮流失的影响[J].土壤,2010,42(6):915-919. HUANG Tao, RONG Xiang-ming, LIU Qiang, ZHANG Yu-ping, XIE Gui-xian, PENG Jian-wei. Effects of different organic fertilization modes on yield, quality, fertilizer nitrogen utilization of spring maize and nitrogen loss from field[J]. Soils,2010,42(6):915-919

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