施用不同肥料土壤水解氮的垂直分布特征  

Vertical Distribution Characteristics of Hydrolyzed Nitrogen in Soils with Different Fertilizers

作　　者：李洪涛[1] 高红莉[1] 王钰涵[1] 郭雷[1] LI Hong-tao;GAO Hong-li;WANG Yu-han(Institute of Geography,Henan Academy of Sciences,Zhengzhou,Henan 450052)

机构地区：[1]河南省科学院地理研究所,河南郑州450052

出　　处：《安徽农业科学》2022年第3期76-78,共3页Journal of Anhui Agricultural Sciences

基　　金：河南省科学院基本科研费项目(200601074);河南省科学院科技开放合作项目(210901007);河南省科学院杰出青年人才项目(210401011);河南省科学院重大科研聚焦专项(210101007)。

摘　　要：以许昌市建安区高效农田灌区为例,研究施用不同肥料土壤水解氮含量的垂直分布特征。结果表明,经过一个耕作周期,施用氮含量322.5 kg/hm^(2)的有机无机复混肥、施用氮含量202.5 kg/hm^(2)的复合微生物肥料与施用氮含量397.5 kg/hm^(2)的常规施肥,三者之间土壤中水解氮含量差异不显著(P>0.05);土壤中水解氮含量表层含量最高,在1.5 m深度出现第二峰值,4.0 m以下各土层间均差异不显著;土壤中水解氮含量的垂直分布在夏季与秋季略有不同,但差异不显著(P>0.05)。The vertical distribution characteristics of soil hydrolytic nitrogen content were studied by applying different types of fertilizers in high efficiency farmland irrigation area of Jian'an District of Xuchang City.The results showed that after one tillage cycle,the difference of soil hydrolytic nitrogen content among organic-inorganic compound fertilizer with nitrogen content of 322.5 kg/hm^(2),compound microbial fertilizer with nitrogen content of 202.5 kg/hm^(2) and conventional fertilization with nitrogen of 397.5 kg/hm^(2) had no significant difference(P>0.05).The content of hydrolyzed nitrogen in the surface layer of soil was the highest,and the second peak appeared at 1.5 m depth,there was no significant difference among soil layers below 4.0 m.The vertical distribution of soil hydrolytic nitrogen content in summer and autumn was slightly different,but the difference was not significant(P>0.05).

关 键 词：无机养分 水解氮 垂直分布 有机无机复混肥 微生物肥料 

分 类 号：S158[农业科学—土壤学]