Effect of Appling Trichoderma aureoviride and Muti-microorganisim on Soil Fertility and Soil Enzyme Activity
SUN Dong-mei1,2, LIN Zhi-wei2, DUAN Dong-ping2, CHI Li1, ZHANG Shu-quan1, YU Yun-kai1, WANG Zhuo2
1Post-doctor Work Station of Qiqihar Institute, Heilongjiang Academy of Agricultural Sciences, Northeast Forestry University, Qiqihar 161041, Heilongjiang, China; 2Heilongjiang August First Reclamation University, Daqing 163319, Heilongjiang, China
Abstract：Taking antagonism bacteria, phosphate dissolving bacteria, silicate dissolving bacteria and Trichoderma sp. as material，through pot experiment, we compared the results and studies the effects of different bio-fertilizer on soil nutrients and soil enzymes activities. The results showed that the concentration of soil nutrients in the treatment of bio-fertilizer were higher than that in the treatments of pure water and chemical fertilizer. The soil urase and phosphatase activity were detected at different tomato development stages. The result showed that the change tendency of soil urase activity and phosphatase activity were the same along different tomato growing stages, the enzyme activity was increasing from germination stage to flowering stage, but decreasing after flowering stage. Contrast to other treatments, the enzyme activity of bio-fertilizers mixed treatment（phosphate dissolving bacteria, silicate dissolving bacteria, antagonism bacteria and Trichoderma sp.）was higher. The urase activity and phosphatase activity by different bio-fertilizer treatments were higher than the treatment of pure water and chemical fertilizer. The urase activity and phosphatase activity of treatment E were 30 % and 27 % higher than that of the treatment of chemical fertilizer, respectively. However, the differences in catalase activity and cellulase activity among different treatments were not significant after harvest.
