Effects of Different Types of Biochar on Physicochemical Properties and Enzymes Activities of Baoshan Tobacco Growing Soil
Yang Ruyi
Guo Yingcheng
Kuang Shuai
Xu Yanli
Song Wenjing
Abstract：In order to explore the response characteristics of physical and chemical properties and en-zymes activities of tobacco growing soil to different types of biochar,the random block design was adopted,and three treatments were set,namely,conventional fertilization(CK),conventional fertilization+biochar based fertilizer(T1),and conventional fertilization+hydrochar based fertilizer(T2).The effects of different types of biochar based fertilizers on physicochemical properties and enzymes activities of tobacco growing soil and their correlations were studied.The results showed that compared with CK,T1 treatment significantly in-creased the soil total porosity of 0～20-cm layer by 14.31％and the soil nitrate nitrogen content by 30.32％,and significantly decreased the soil ammonium nitrogen content by 45.71％.Compared with CK,in 0～20-cm and 20～40-cm soil layers,T2 treatment significantly increased soil pH(by 7.74％and 7.57％),total nitro-gen(by 30.85％and 17.69％),nitrate nitrogen(by 30.40％and 24.66％),and decreased C/N(by 25.75％and 21.01％).Compared with CK,the activities of urease and sucrase in 0～20-cm soil layer were significant-ly decreased under T1 and T2 treatments by 19.42％and 29.72％,18.53％and 21.33％,respectively;T1 treatment significantly increased the cellulase activity by 9.72％and 53.95％,respectively.In conclusion,ure-ase and sucrase were the main driving factors of soil physical and chemical properties in 0～20-cm and 20～40-cm soil layers,respectively.
Keywords：BiocharHydrocharEnzyme activityTobacco growing soilPhysicochemical properties
Publication Date：2024-11-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 92-99 )