Study On The Change Of The Soil Soluble Organic Carbon And The Enzyme Activity In Different Fertilized Tea Plantations

The changes of WSOC, SOCK2SO4, SMBC, invertase, cellulase and P-glycosidase in different organic fertilizers, chemical fertilizers, fertilization fixed number of years, clip time, seasons, soil layers and sampling interval in the tea garden soil were studied by analytic method including the TOC instrument analysis method,the colorimetric method and statistical analysis method including variance (ANOVA), correlation, through7years organic inorganic nitrogen fertilizer field experiment and12years chemical fertilizer field experiments, to understand these factors to soil soluble organic carbon, microbial carbon and enzyme activity, the effects of the reasonable application for tea garden, tea garden soil carbon sequestration research and realize the sustainable use of garden soil provides theory basis.With the increase of organic fertilizer, SMBC and cellulase in February in GB soil increased significantly, WSOC, SOCK2SO4, P-glycosidase in August in SB interval soil, invertase in February SD soil and in May SB interval soil and cellulase in May in GD interval soil have firstly a significant increase and a drop later;The changes of SOCK2SO4, β-glycosidase and cellulase in different clip time is that the clip before spring is largest, the clip after autumn is smallest, the change of invertase is that the clip after spring is significantly higher than the clip after autumn, the change of WSOC is that the clip after autumn is largest, the clip before spring is smallest, the change of SMBC is significant; SOCK2SO4, SMBC, β-glycosidase, invertase and cellulose in GD and SB interval soil in August/May are significantly higher than in February/October, WSOC in October/February are significantly greater than in August/May, cellulase in low fertilizer levels in August/May/February are significantly higher than in October, in medium fertilizer levels in May are significantly greater than in February/August/October, high fertilizer levels on October/February are significantly greater than in August/May; SOCK2SO4, WSOC, SMBC, β-glycosidase, invertase and cellulase in surface soil are significantly greater than the bottom soil, SOCK2SO4in August/May, β-glycosidase in surface soil, SMBC in May/October in surface soil, invertase in May/August in surface soi and cellulase in May/August/October in surface soil fertilization area are significantly higher than the rhizosphere area, SOCK2SO4in February, SMBC in February in soil surface, WSOC rhizosphere area are significantly higher than fertilization area. There are significant correlation among SOCK2SO4, WSOC and SMBC, among β-glycosidase, invertase and cellulase, and between soluble organic carbon and soil enzymes.SOCK2SO4, invertase, cellulose in autumn and winter in fertilization area soil in inorganic nitrogen fertilizer show "low-high-low" change trend; cellulase in spring and winter rhizosphere area soil and β-glycosidase in spring and autumn rhizosphere area soil have certain stimulative effect; B-glycosidase in the autumn and spring fertilization area soil have certain inhibition; SOCK2SO4have a trend of increase with the increasing of inorganic nitrogen fertilization; WSOC in different nitrogen levels soil have certain stimulative effect, show the first increased and then slow; With the increasing of inorganic nitrogen fertilization the SMBC is reduce, and NL soil significantly higher than NL soil. SOCK2SO4in different inorganic nitrogen level is highest in spring and lowest in autumn and winter; WSOC is highest in summer and smallest in spring; SMBC is significantly highest in summer and winter and lowest in spring and fall; invertase is significantly highest in summer and spring and lowest in winter and fall; Cellulase is highest in summer and lowest in spring and winter; B-glycosidase is significantly highest in summer and lowest in winter.SOCK2SO4in surface soil less than in the bottom soil, WSOC, SMBC, invertase, cellulase and β-glycosidase are significant higher in surface soil than in the bottom soil.SOCK2SO4in medium fertilizer levels in surface air dry soil in autumn and in medium fertilizer levels in the bottom air dry soil in winter, WSOC in spring wet earth surface soil, autumn wet earth medium surface soil and spring air dry surface soil in high fertilization, SMBC, cellulase in autumn medium bottom soil and in controls fertilizer summer bottom soil and P-glycosidase in winter and spring in fertilization area soil are significantly greater than in the rhizosphere area soil.SOCK2SO4in medium fertilizer levels Air dry surface soil in spring, WSOC in medium fertilizer levels Air dry soil in summer, invertase in medium fertilizer levels bottom soil in spring and β-glycosidase in autumn and summer in fertilization area soil are significantly greater than in the rhizosphere area soil.