有机氮无机氮不同配比对盐渍化土壤的改良效果  

Improvement Effect of Different Proportion of Organic Nitrogen and Inorganic Nitrogen on Salinity Soil

作　　者：李洁[1] 刘善江[2] 陈益山[2] 白杨[2] 马良[2] 吴荣[1] 杨东杰[1] 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271000 [2]北京市农林科学院植物营养与资源研究所,北京100097

出　　处：《北方园艺》2014年第8期160-164,共5页Northern Horticulture

基　　金：北京市农业科技资助项目(20120120)

摘　　要：通过大田试验，研究了冬小麦夏玉米轮作模式下4种有机氮无机氮配比对盐渍化土壤改良效果的影响。结果表明：有机氮投入比例越高，对土壤全盐含量的降低效果越好；盐渍化土壤单施化学肥料会加重盐害；有机氮投入会在短期降低耕层土壤pH0．11～0．19，有机氮投入可降低耕层土壤Na＋、Cl-含量；以有机氮：无机氮=2：1对盐渍化土壤的改良效果最佳。A field experiment was carried out to study the improvement effect of four different proportions of organic nitrogen and inorganic nitrogen on salinity soil in the winter wheat and summer maize rotating system. The results showed that the higher of organic nitrogen proportion was,the better of the effect on reducing the soil total salt content was. Only chemical fertilizer would aggravate salt injury. The organic nitrogen application decreased soil pH from 0. 11 to 0. 19 in a short time and reduced the Na＋ and Cl- contents in the tilth soil. The best ratio of organic nitrogen to inorganic nitrogen was two to one.

关 键 词：有机氮 无机氮 配比 盐渍化土壤 改良 

分 类 号：S156.49[农业科学—土壤学]