| 不同施肥方式对植烟土壤有效氮、烟株氮累积量和速率的影响 |
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| 引用本文： | 袁家富,徐祥玉,赵书军,秦兴成,熊又升,彭成林,侣国涵.不同施肥方式对植烟土壤有效氮、烟株氮累积量和速率的影响[J].中国烟草科学,2011,32(Z1):76-81. |
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| 作者姓名： | 袁家富 徐祥玉 赵书军 秦兴成 熊又升 彭成林 侣国涵 |
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| 作者单位： | 1. 湖北省农业科学院植保土肥所,武汉,430064
2. 湖北省烟草公司恩施州公司,湖北恩施,445000 |
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| 摘 要： | 在鄂西南植烟土壤上研究了不同施肥方式对土壤有效氮、烟株氮累积量以及氮累积速率的影响。结果显示,在不栽烟情况下,施肥后40 d内肥料养分损失完毕,60 d后土壤有机氮矿化量高于有效氮损失量,土壤有效氮出现净累积;全生育期覆膜方式下移栽后63 d内化肥处理(D)土壤有效氮明显高于有机无机配施处理(G),烟株氮累积和土壤有效氮下降成显著负相关,且G处理相关程度(-0.935)高于D处理(-0.661);前期覆膜团棵揭膜方式下,移栽后42 d内化肥处理(E)土壤有效氮明显高于有机无机配施处理(F),烟株氮累积量和累积速率F处理均高于E处理;提前施肥起垄方式下,化肥处理(I)和有机无机配施处理(H)土壤有效氮变化基本一致且烟株氮累积量和累积速率H处理均高于I处理。不论何种施肥方式,移栽后前期化肥处理土壤有效氮含量明显高于有机无机配施处理,而烟株氮累积则相反,证明施用有机肥可以使烟株对氮素吸收累积高峰提前,且提高烟株氮累积量和氮累积速率。提前施肥可明显弱化不同肥料处理之间土壤有效氮的差异。
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| 关 键 词： | 施肥方式 有效氮 氮累积 累积速率 |
Effect of Different Fertilizations on Soil Available N, N Accumulation and N Accumulative Rate of Tobacco Plants |
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| YUAN Jiafu,XU Xiangyu,ZHAO Shujun,QIN Xingcheng,XIONG Yousheng,PENG Chenglin,SI Guohan.Effect of Different Fertilizations on Soil Available N, N Accumulation and N Accumulative Rate of Tobacco Plants[J].Chinese Tobacco Science,2011,32(Z1):76-81. |
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| Authors: | YUAN Jiafu XU Xiangyu ZHAO Shujun QIN Xingcheng XIONG Yousheng PENG Chenglin SI Guohan |
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| Affiliation: | YUAN Jiafu1,XU Xiangyu1,ZHAO Shujun1,QIN Xingcheng2,XIONG Yousheng1,PENG Chenglin1,SI Guohan1(1.Institute of Plant Protection and Soil Science of Hubei Agricultural Academy of Science,Wuhan 430064,China,2.Enshi Tobacco Company of Hubei Province,Enshi,Hubei 445000,China) |
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| Abstract: | This study investigated the soil available N,N accumulation and accumulative rate of tobacco plants under different fertilizations.The results showed that the fertilizer nutrients from 0-40 cm soil loss completely in 40 days of fertilization in plots without tobacco.Net accumulation of soil available N occurred because mineralization of soil organic N exceed available N loss after 60 days.Soil available N content was obviously higher in chemical fertilizer treatment(D) than in inorganic/organic fertilizer t... |
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| Keywords: | fertilization available N N accumulation accumulative rate |
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