Characteristics of three decomposer accelerators on maize straw decomposition.

In order to make sure the effect of straw decomposer accelerators on the maize straws in Northeast of China, mesh bag method was used to determine the decomposition characteristics of maize straw biomass amount and nutrition release regularity in one year. The results showed that after 100 days, decomposition rates of maize straws biomass amount were between 57.1%~64.1%. The highest decomposition rate of 64.1% was the treatment with the 3rd decomposer accelerator. The nutrition release rates of N, P and K were 35.1%~57.2%, 44.2%~59.6%,and 77.4%~89.7% at the end of period, respectively. And the 3rd decomposer accelerator treatment had a better effect on the release rate of P and K. All treatments had the same trend of organic C mineralization rate which increased with the time extending, at last the organic C mineralization rate was between 65.3% and 69.1%. The results showed the 3rd decomposition accelerator had better effect than others.