摘要
为研究庆阳地区果园土壤有机质含量对土壤氮素营养的影响,对30个果园和临近地块大田土壤进行了有机质含量和氮素营养的农化测定对比分析。结果表明:果园土壤平均有机质含量为13.12g·kg-1,平均全氮含量为0.75g·kg-1,平均速效氮含量为75.97mg·kg-1;大田土壤平均有机质含量为10.50g·kg-1,平均全氮含量为0.70g·kg-1,平均速效氮含量为52.50mg·kg-1。与当地大田土壤养分含量相比,果园土壤有机质、全氮、速效氮的含量较高。大田土壤有机质与全氮含量的相关关系为y=0.064 3x+0.032 4,相关系数R2=0.707 3,全氮与速效氮含量之间的相关关系为y=57.917x+11.808,相关系数R2=0.659 5;果园土壤的有机质与全氮、全氮与速效氮之间无明显的相关性。
This experiment was conducted in 30 orchards and nearly field on rain fed area of Longdong.Aimed to research effects of soil organic matter on nitrogen in soil.The results showed the average soil organic matter was13.12g·kg^-1 in orchard soil.Also,the average total nitrogen was 0.75g·kg^-1,the average available nitrogen was75.97mg·kg^-1.But in field soil,the average soil organic matter,the average total nitrogen,and the average available nitrogen separately were 10.50g·kg^-1,0.70g·kg^-1,52.50mg·kg^-1.The content of organic matter,total nitrogen and available nitrogen were significantly higher in orchard than field.The correlation between soil organic matter and total nitrogen content was y=0.064 3x＋0.032 4（R2=0.707 3）in field soil.The correlation between total nitrogen and available nitrogen content was y=57.917x＋11.808＊（R2=0.659 5）.But the above correlation was not found in orchard soil.
作者
姚志龙
YAO Zhilong(College of Agriculture and Forestry,Longdong University,Qingyang,Gansu 74500)
出处
《北方园艺》
CAS
北大核心
2016年第18期176-180,共5页
Northern Horticulture
基金
甘肃省庆阳市科技支撑计划资助项目(KN201316)
关键词
果园土壤
大田土壤
有机质
氮素营养
相关性
orchard soil
field soil
organic matter
nitrogen nutrition
correlation
