Effect of Straw Decomposing Inoculant on Maize Straw Returning

Effect of straw-decomposing inoculant on the growth,yield,decay rate of straw,soil microbe and soil fertility of maize was studied under field-and pot-experiment conditions.The results showed that using straw-decomposing inoculant in the stage of straw application significantly increased maize yield;with the application of straw-decomposing inoculant and less amount of straw returning,the maize yield underwent a significant increase compared to that of the yield in the treatments using large amount of straw returning.It showed that the straw returning by crushing in cooperated with straw-decomposing inoculant had a better yield-improving effect than straw returning by burning in maize.The application of straw-decomposing inoculant had obvious influences on increasing the number of soil microorganisms and promoting the straw decomposition;meanwhile,it could reduce the adverse impact of excessive straw returning on crop growth,and steadily increased the contents of soil nutrients.