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长期施用绿肥对红壤稻田水稻产量和土壤养分的影响
引用本文:李继明,黄庆海,袁天佑,曹金华,余喜初.长期施用绿肥对红壤稻田水稻产量和土壤养分的影响[J].植物营养与肥料学报,2011,17(3):563-570.
作者姓名:李继明  黄庆海  袁天佑  曹金华  余喜初
作者单位:1.华中农业大学资源与环境学院,湖北武汉 430070;
摘    要:通过对26年长期定位试验结果的统计分析,结果表明:绿肥与化肥长期配合施用有利于水稻稳产增产,减少化肥的使用量,提高化肥NPK养分的农学利用效率达60%以上。26年水稻平均产量以OM3处理(紫云英+猪粪)最高,比CK增产64.47%,比NPK处理增产6.86%;其化肥养分农学效率为16.33kg/kg,比NPK处理化肥养分农学效率高118.9%。绿肥与化肥长期配合施用土壤有机质、全氮和全磷均有所积累,积累的量与肥料施用量及有机肥种类相关,以紫云英+猪粪处理最优。土壤钾素均表现亏缺,土壤全钾和速效钾均低于试验前,亏缺幅度最小的是紫云英+稻草处理,其土壤全钾和速效钾分别比对照高4.28%和13.94%。通过对土壤有机质、全氮、全磷和全钾与水稻产量关性分析,相关系数最高的为土壤全钾(r=0.808**),说明缺钾已成为限制红壤稻田高产的主要肥力因子。

关 键 词:绿肥    长期定位试验    红壤性水稻土    土壤肥力    水稻产量
收稿时间:2010-08-13

Effects of long-term green manure application on rice yield and soil nutrients in paddy soil
LI Ji-ming,HUANG Qing-hai,YUAN Tian-you,CAO Jin-hua,YU Xi-chu.Effects of long-term green manure application on rice yield and soil nutrients in paddy soil[J].Plant Nutrition and Fertilizer Science,2011,17(3):563-570.
Authors:LI Ji-ming  HUANG Qing-hai  YUAN Tian-you  CAO Jin-hua  YU Xi-chu
Institution:1.College of Resource and Environment,Huazhong Agricultural University,Wuhan 430070,China;
Abstract:A long-term field experiment on rice yield and soil fertility under different fertilization systems were carried out to study the effects of manure application on rice yield and soil nutrients in paddy soil.In this paper,the 26-year experimental results were analyzed.The results show that the long-term applications of green manure combined with chemical fertilizers are in favor of stable and high yields of rice,reduce amounts of fertilizer applications,and raise agronomic efficiencies(beyond 60%) of chemica...
Keywords:green manure  long-term experiment  paddy soil derived from red soil  soil fertility  rice yield  
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