| In this study, the field experiment had set up7treatments:conventional fertilization(CF), straw returning(S),50%fungus waste returning (T1),100%fungus waste returning (T2),150%fungus waste returning (T3),200%fungus waste returning (T4),250%fungus waste returning (T5), and each treatment repeated4times. Collected soil samples with the depth of0-10cm,10-20cm,20-40cm in tillering stage, jointing stage, heading stage and maturity stage in rice season, and the seeding stage, tillering stage, jointing stage, heading stage and maturity stage in wheat season. Study the catalase, dehydrogenase, invertase,urease and neutral phosphatase activity changes of fresh soil samples under different fertilization conditions.In0-10cm soil layer, compared with the conventional fertilization, the bacteria residue field processing and the processing of straw could be able to significantly improve the enzymatic activity of catalase in rice tillering and heading stage, the enzymatic activity of dehydrogenase in rice whole childbearing period, and the enzymatic activity of phosphatase in the whole childbearing period except the heading stage. Mushroom residue stalks treatment could significantly improve the invertase activity in rice heading and maturity; the invertase activity of bacteria residue was significantly higher than the straw processing of the rice tillering and joining stages.Mushroom residue stalks treatment and straw processing both could significantly improve the activity of soil urease in wheat the whole growth processing in addition to the jointing stage, the soil neutral phosphatase activity of the wheat seedling and tillering stage; mushroom residue field treatment could significantly improve the invertase activity in wheat joining stage and the dehydrogenase activity in wheat seedling and tillering stage;mushroom residue field processing of invertase activity was significantly higher than the straw processing of sucrose in wheat at tillering and jointing stage activity. Overall, both the mushroom residue of straw application significantly increased soil enzyme activity.Under the different fertilizer situations, soil enzyme activity was changed obviously in the crops Growth period。 soil catalase and invertase activity in the growth process of rice and wheat has emerged first increased, then reduce, the trend of the last increase, and reach highest when mature stage; dehydrogenase, urease and neutral phosphatase variation trend were Not the same, in Wheat and rice growing season, With the growth of rice, Different treatments dehydrogenase and neutral phosphatase activity emerged as the first increased and then decreased, urease showed decreased first, then increased and then decreased, oppositely in the wheat season showed first increased and then decreased and then rising trend.In the present study, five kinds of soil enzyme activity weakend as long as the deepth of the profiles under different fertilization treatments, in addition to the daily variations’ urease in the processing conditions CF, T1, T2, and the remaining growth period in each treatment0-10cm soil enzyme activity was significantlyhigher than the other soil; soil enzyme activity of10-20and20-40cm were also different, but it was not significant, indicating that the profile of0-10and10-20cm activity decline rates was higher than the profile of10-20and20-40cm decline rate.The correlation between the soil enzyme activity and organic matter was better.By annlysising to the correlation between a variety of soil enzyme and main soil nutrient,we can showed that:organic matter and soil dehydrogenase (r=0.820*), total nitrogen and soil dehydrogenase (r=0.758*), neutral phosphatase (r=0.934**), total phosphorus and invertase (r=0.785*), total potassium and urease (r=845*), neutral phosphatase (r=0.778*) were both in a significant correlationship. In the available nutrient, the correlation between nitrogen and potassium and soil enzyme was better than the correlation between the available phosphorus and soil enzyme activity. |
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