Effects of Biochar and Its Combined Application with Chemical Fertilizers on Physical and Chemical Properties and Microbial Quantity of Fluvo-aquic Soil and Winter Wheat Yield
In order to find out the application effects of biochar in fluvo-aquic soil and promote the scientific application of biochar,a field experiment with four treatments including control (CK),only biochar (B),only chemical fertilizers (F) and biochar with chemical fertilizers (BF) were conducted to assess the effects of biochar and its combined application with chemical fertilizers on the physical and chemical properties of fluvoaquic soil,microbial quantity of fluvo-aquic soil and winter wheat yield.Results showed that if the B treatment was compared with CK and BF treatment was compared with F treatment,both of the biochar application treatments significantly increased soil organic carbon and available K contents,but had no significant effect on soil pH,available P,bulk density and available N contents.The bacteria and actinomycetes quantity increased after biochar application and this increase was significant in the overwintering stage,while the fungi number showed a decreasing trend after biochar application.Compared to CK,B treatment improved the straw and grain dry weight by 6.8％ and 4.2％,respectively.Compared to F treatment,BF treatment increased the straw and grain dry weight by 4.4％ and 16.5％,respectively.Therefore,the application of biochar could ameliorate the physical and chemical properties of fluvo-aquic soil,increased the bacteria and actinomycetes quantity as well as the winter wheat yield to a degree.
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万方数据
维普
