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长期不同施肥对水稻土有机氮素矿化特性影响的研究
引用本文:张玉玲,张玉龙,虞娜,姬景红.长期不同施肥对水稻土有机氮素矿化特性影响的研究[J].植物营养与肥料学报,2008,14(2):272-276.
作者姓名:张玉玲  张玉龙  虞娜  姬景红
作者单位:1.沈阳农业大学土地与环境学院,辽宁沈阳 110161;
基金项目:辽宁省重大农业攻关项目
摘    要:通过定位试验研究了长期不同施肥措施对水稻土氮素矿化特性的影响。结果表明,长期不同施肥措施显著影响水稻土氮矿化势及矿化速率。与不施氮肥相比,单施氮肥使水稻土氮矿化势下降,矿化速率加快;氮肥与有机肥配施可极显著增加水稻土氮矿化势,降低矿化速率。在氮肥与有机肥配施的基础上,水稻插秧后接种“Azolla”固氮菌体可降低氮矿化势,提高矿化速率。

关 键 词:长期施肥    水稻土    氮矿化势    矿化速率
文章编号:1008-505X(2008)02-0272-05
收稿时间:2007-1-30
修稿时间:2007年1月30日

Effect of different long-term fertilizing practices on nitrogen mineralization characteristic of paddy soil
ZHANG Yu-ling,ZHANG Yu-long,YU Na,JI Jing-hong.Effect of different long-term fertilizing practices on nitrogen mineralization characteristic of paddy soil[J].Plant Nutrition and Fertilizer Science,2008,14(2):272-276.
Authors:ZHANG Yu-ling  ZHANG Yu-long  YU Na  JI Jing-hong
Affiliation:1.College of Land and Environmental Sciences,Shenyang Agricultural University,Shenyang 1101611,China;
Abstract:Based on a 16-year long-term fertilization experiment with fixed site on paddy soil in Shenyang, Liaohe plain, the effect of long-term fertilization practices on nitrogen mineralization characteristic of paddy soil was studied. Results showed the nitrogen mineralization potential and mineralized rate was affected significantly by different long-term fertilization practices. Compared with control (no chemical nitrogen application), single application of nitrogen fertilizer could decrease nitrogen mineralization potential but increase mineralization rate. Applying nitrogen fertilizer and manure could increase nitrogen mineralization potential very significantly and decrease mineralization rate. Applying chemical nitrogen fertilizer and manure and inoculating “Azolla” for 7-years after transplanting rice seedlings could decrease nitrogen mineralization potential and increase mineralization rate.
Keywords:long-term fertilization  paddy soil  nitrogen mineralization potential  mineralization rate
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