Agriculture Reference
In-Depth Information
7
Long-Term Effects of
Different Fertilizer
Management Practices
on Soil Organic Carbon
Pool in Smallholder
Farms of the Huang-
Huai-Hai Plains, China
Xiangbin Kong, Rattan Lal, Baoguo Li, Lei Han,
Hongjun Lei, Kejiang Li, and Youlu Bai
CONTENTS
7.1 Introduction .................................................................................................. 166
7.2
Materials and Methods ................................................................................. 167
7.2.1
Study Area and SOC Analysis.......................................................... 167
7.2.2
Experimental Design and Management ........................................... 170
7.2.3
Data Analyses and Calculations ....................................................... 171
7.2.4
Data Processing and Statistics .......................................................... 172
7.3
Results and Discussions ................................................................................ 172
7.3.1
SOC Pool Change under Different Fertilizer Managements
across HHH ...................................................................................... 172
7.3.2
SOC Pool Changes under Different Fertilizer Managements
Compared with CK ........................................................................... 174
7.3.2.1 CK ...................................................................................... 174
7.3.2.2 O ......................................................................................... 174
7.3.2.3 UF ...................................................................................... 175
7.3.2.4 CF ....................................................................................... 175
7.3.2.5 CFO .................................................................................... 175
7.3.2.6 UFO ................................................................................... 175
7.3.3
Rate of Change of SOC Pool under Different Fertilizer
Management Treatments ................................................................... 177
165
