土壤学报2024，Vol.61Issue(6)：1568-1576,9.DOI:10.11766/trxb202304200157
便携式土壤多参数快速检测仪原位测量东北黑土pH
Quick Acquisition of Black Soil pH Values from Northeast China by Portable Soil Multi-parameter Rapid Detection Instrument
摘要
Abstract
[Objective]Soil pH is a crucial indicator of arable land quality.Therefore,precise and rapid measurement of soil pH is essential for the implementation of digital agriculture.[Method]In the present study,pH levels of the black soil in the Liaohe and Songnen plains were determined in situ using a self-developed portable soil multi-parameter rapid detection instrument(SHMI2000).The results were compared to those obtained in the laboratory using the potentiometry method(HJ 962-2018).[Result](1)The laboratory observations showed that surface and subsurface soil pH values ranged from 4.04 to 10.09,and 4.01 to 10.06,respectively.The mean values were 6.13 and 6.47,and the variation coefficient values were moderate at 19.64%and 18.37%,respectively.The study also revealed that the soils in the southwest black soil area were predominantly alkaline,whereas the soils in the east(Sanjiang Plain),north(Songnen Plain),and south(particularly in the Southern Heilongjiang,Jilin,and Liaoning Provinces)were acidic in nature.(2)The Pearson correlation analysis showed a strong relationship(correlation coefficient of 0.81,P=9.11×10-52)between pH values obtained in situ and laboratory conditions.(3)The correlation coefficient increased to 0.93 after the moving average process,using 0.2 pH units as step size.[Conclusion]Therefore,the SHMI2000 instrument can accurately and reliably acquire black soil pH values in situ.关键词
黑土/土壤pH/原位测量/电位法/移动平均法Key words
Black soil/Soil pH/In situ measurement/Potentiometry method/Moving average process分类
农业科技引用本文复制引用
张凤,胡文友,王亮亮,李德成,张超,谢恩泽,严国菁,姜军,徐仁扣..便携式土壤多参数快速检测仪原位测量东北黑土pH[J].土壤学报,2024,61(6):1568-1576,9.基金项目
国家重点研发计划项目(2021YFD1500202)、中国科学院战略性先导科技专项项目(XDA28010100)和国家重点农业科技项目(NK2022180104)资助 Supported by the National Key R&D Program of China(No.2021YFD1500202),the Strategic Leading Science and Technology Project of Chinese Academy of Sciences(No.XDA28010100),and the National Key Agricultural Science and Technology Project of China(No.NK2022180104) （2021YFD1500202）
