通辽市耕地土壤养分、酸碱度状况及肥力评价  

Soil Nutrient,pH and Fertility Evaluation of Cultivated Land in Tongliao City

作　　者：侯迷红[1] 纪凤辉 范富[1] 张庆国[1] 邰继承[1] 李堂辉 李长威 HOU Mi-hong;JI Feng-hui;FAN Fu;ZHANG Qing-guo;TAI Ji-cheng;LI Tang-hui;LI Chang-wei(College of Agriculture,Inner Mongolia Minzu University,Tongliao 028043,China;Tongliao Agriculture and Animal Husbandry Bureau,Tongliao 028000,China;Tongliao Kulun Banner Rural Pastoral Economic Development and Construction Guidance Service Center,Tongliao 028200,China)

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028043 [2]通辽市农牧局,内蒙古通辽028000 [3]通辽市库伦旗农村牧区经济发展建设指导服务中心,内蒙古通辽028200

出　　处：《内蒙古民族大学学报（自然科学版）》2022年第6期471-476,共6页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：国家自然科学基金项目(31760372);内蒙古自治区科技创新引导项目(KCBJ2018027);内蒙古自治区科技计划项目(2022YFXZ0041);内蒙古民族大学与通辽市土壤肥料工作站合作项目(Q1800102)。

摘　　要：根据地形、土壤及气候等因素,将通辽市划分为北部低山丘陵区、平原区、坨沼区和南部黄土丘陵区,以耕地为研究对象,通过测土配方施肥项目对4个不同区域土壤养分和pH进行分析,确定其土壤肥力现状和分布特征。结果表明:通辽市农田土壤的有机质含量为15.2 g·kg^(-1),全氮含量为0.86 g·kg^(-1),有效磷含量为8.1 mg·kg^(-1),速效钾含量为133 mg·kg^(-1),p H为8.11;不同区域土壤养分存在显著差异,土壤有机质和全氮自北向南呈下降趋势,有效磷含量表现为坨沼区>平原区>北部低山丘陵区>南部黄土丘陵区,速效钾含量表现为平原区>北部低山丘陵区>坨沼区>南部黄土丘陵区,p H表现为平原区>坨沼区>南部黄土丘陵区>北部低山丘陵区;北部低山丘陵区土壤有机质和全氮含量较为丰富,主要分布在一级到三级,处于中等及中等偏上水平;平原区有机质一级到五级均有分布;土壤全氮主要分布在三级和四级,其养分含量适中;坨沼区有机质主要分布在三级和四级,处于中等偏下水平,土壤全氮主要集中分布在三级和四级,养分含量适中;南部黄土丘陵区耕地土壤有机质和全氮都主要集中分布在四级和五级,养分缺乏,处于中等偏下水平;4个区域土壤有效磷主要分布在三级和四级,土壤有效磷处于中等偏下水平,耕地土壤速效钾主要分布在三级水平,处于中等及中等偏下水平。通辽市耕地土壤整体偏碱性。According to the terrain,soil and climate factors,Tongliao City was divided into:the northern low mountain and hilly region,the plain region,the marsh region and the southern loess hilly region.Taking the cultivated land as the research object,the soil nutrients and p H in four different regions were analyzed through soil testing and formula fertilization project to determine the current situation and distribution characteristics of soil fertility.Results showed that the organic matter content of farmland soil was 15.2 g·kg^(-1),the total nitrogen content was 0.86 g·kg^(-1),the available phosphorus content was 8.1 mg·kg^(-1),the available potassium content was 133 mg·kg^(-1),and the p H was 8.11 in Tongliao City.There were significant differences in soil nutrients from different regions.Soil organic matter and total nitrogen showed a downward trend from north to south.The available phosphorus content showed as follows:marsh region>plain region>northern low mountain and hilly region>southern loess hilly region,and the available potassium content showed as follows:plain region>northern low mountain and hilly region>marsh region>southern loess hilly region,and the p H showed as follows:plain region>marsh region>southern loess hilly region>northern low mountain and hilly region.The contents of soil organic matter and total nitrogen were relatively rich,mainly distributed from the first level to the third level,which was at the medium and upper middle level in the northern low mountain and hilly region.In the plain area,organic matter was distributed from the first level to the fifth level;Soil total nitrogen was mainly distributed at the third and fourth levels and its nutrient content was moderate.The organic matter was mainly distributed at the third and fourth levels,which was at the lower middle level in the marsh region;Soil total nitrogen was mainly distributed at the third and fourth levels and the nutrient content was moderate.The soil organic matter and total nitrogen of cultivated land were mainly distr

关 键 词：土壤肥力 通辽市 耕地 

分 类 号：S158[农业科学—土壤学]