摘要
以大兴安岭南麓阿荣旗全境农田土壤为研究对象,采用经典统计学对其土壤养分进行系统分析,探索大兴安岭南麓农田耕层土壤速效养分空间异质性。结果表明,土壤pH均值为6.02,总体呈弱酸性,适宜作物生长,变异度为2.06%~6.27%,为弱变异度;土壤速效钾均值为267.86 mg/kg,总体含量很丰富;土壤速效磷、碱解氮的含量均值为4.83、24.13 mg/kg,总体含量均很缺乏。速效钾、速效磷、碱解氮变异度均在10%~100%,为中等变异程度。在一定程度上,阿荣旗农田土壤各样点均存在显著的空间异质性。速效磷、碱解氮含量很缺。该研究为合理优化施肥方案、改善耕作方式、提高速效磷和碱解氮的积累、实现阿荣旗农田土壤养分平衡、提升地力提供科学依据,为构建大兴安岭南麓耕地地力评价体系提供技术支撑。
Taking the farmland soil in Arong Banner at the south foot of Daxing’an Mountains as the research object,the soil nutrients were systematically analyzed by classical statistics to explore the spatial heterogeneity of available nutrients in farmland topsoil at the south foot of Daxing′an Mountains.The results showed that the average value of soil pH was 6.02,which was generally weakly acidic and suitable for crop growth.The degree of variation was 2.06%-6.27%;the average value of soil available potassium was 267.86 mg/kg,and the overall content was very rich;the average contents of soil available phosphorus and alkali hydrolyzable nitrogen were 4.83 and 24.13 mg/kg,and the overall contents were very lacking.The variability of available potassium,available phosphorus and alkali hydrolyzable nitrogen was between 10%-100%,which was a medium degree of variation.To a certain extent,there was significant spatial heterogeneity in farmland soil in Arong Banner.The contents of available phosphorus and alkali hydrolyzable nitrogen are very deficient.This study provides scientific basis for reasonably optimizing fertilization scheme,improving farming methods,improving the accumulation of available phosphorus and alkali hydrolyzable nitrogen,realizing farmland soil nutrient balance and improving soil fertility in Arong Banner,and provides technical support for the construction of cultivated land fertility evaluation system of southern foot of Daxinganling.
作者
刘战勇
张佳倩
孙鸿举
张向前
厉雅华
武迪
张德健
LIU Zhan-yong;ZHANG Jia-qian;SUN Hong-ju(School of Life Sciences,Inner Mongolia University,Hohhot,Inner Mongolia 010070;Key Laboratory of Forage and Characteristic Crops,Ministry of Education,Hohhot,Inner Mongolia 010070)
出处
《安徽农业科学》
CAS
2023年第2期164-168,共5页
Journal of Anhui Agricultural Sciences
基金
内蒙古自治区科技重大专项(2019ZD009,2020ZD0005-0403)
内蒙古自治区科技计划项目(2021GG064)
内蒙古自治区人才引进项目(2020YJ007)
内蒙古自治区草原英才个人培养项目(CY2020016)。
关键词
土壤养分
空间异质性
变异度
相关性
大兴安岭南麓
Soil nutrients
Spatial heterogeneity
Degree of variability
Relevance
South foot of Daxinganling
